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Staphane Sebban - One of the best experts on this subject based on the ideXlab platform.

  • High Density Optical-Field-Ionization Soft X-Ray Lasers
    2012
    Co-Authors: F. Tissandier, Staphane Sebban, Philippe Zeitoun, M. Kozlova, Julien Gautier, A. Klisnick, G. Maynard
    Abstract:

    Generating an Optical-Field-ionization (OFI) collisional soft X-ray laser amplifier in a high density plasma would allow a significant increase of the saturation intensity, laser gain, and reduction of the emitted pulse duration. Due to strong refraction of the pump infrared beam in the plasma, guiding techniques have to be implemented. Using an Optically preformed plasma waveguide, we successfully achieved guiding of J-energy pulses in a near-critical density krypton plasma with 50 % total transmission over 5 to 10 mm. X-ray lasing at 32.8 nm has also been demonstrated. This technique is a step towards OFI recombination soft X-ray lasers. This pumping scheme requires the production of a cold and dense plasma. We propose to pump a high density neon VIII plasma by a frequency doubled intense Ti:Sa laser. Guiding of the 405 nm pump pulse has already been achieved at LOA.

  • Characterization of the collisionally pumped Optical-Field-ionized soft-x-ray laser at 41.8 nm driven in capillary tubes
    Physical Review A, 2006
    Co-Authors: B. Cros, Staphane Sebban, I. Bettaibi, Tomas Mocek, G. Vieux, M. Farinet, J. Dubau, G. Maynard
    Abstract:

    We report on experimental and theoretical studies of a collisionally pumped, Optical-Field-ionized soft-x-ray laser (SXRL) at 41.8 nm driven in capillary tubes with smooth inner surface. A detailed experimental study has been conducted in order to understand the key effects related to guiding in this configuration. The amplifying plasma was created inside few-cm-long capillary tubes, and maximum extreme ultraviolet emission was obtained when operating in a multimode guiding regime with an optimized lasing signal from a 25-mm-long capillary a factor of 3 higher than that of a gas cell and with a beam divergence reduced by a factor of 3. A numerical code, named COFIXE, has been developed to calculate the SXRL signal emitted by the plasma source. It includes the calculation of the pump beam propagation, the determination of the plasma state just after the interaction with the pump beam, the calculation of the evolution of the local properties of the plasma during the subsequent few ps, and the calculation of the amplification and transport of the SXRL emission. Excellent agreement has been obtained between experiment and theory for several features such as the divergence of the beam, the correlation between guided pump beam transmission and SXRL energy, and the enhancement factor induced by guiding.

  • Progress in Optical-Field-ionization soft X-ray lasers at LOA
    Laser and Particle Beams, 2005
    Co-Authors: Tomas Mocek, Staphane Sebban, I. Bettaibi, G. Maynard, C.m. Mckenna, A Butler, B. Cros, Philippe Zeitoun, Gabriel Faivre, D.j. Spence
    Abstract:

    We give on overview of recent advances in collisionally pumped Optical Field-ionization soft X-ray lasers developed at LOA. Saturated amplification has been achieved on the 5d-5p transition in Xe^8+ at 41.8 nm, and on the 4d-4p transition in Kr^8+ at 32.8 nm. We demonstrate a significant increase of the energy output from the Xe^8+ laser driven within two types of wave-guide. Finally, we present results of a pioneering work aimed to set up and characterize the first true soft X-ray laser chain.

  • Characterization of collisionally pumped Optical-Field-ionization soft X-ray lasers
    Applied Physics B - Laser and Optics, 2004
    Co-Authors: Tomas Mocek, Staphane Sebban, I. Bettaibi, Philippe Balcou, Philippe Zeitoun, L. M. Upcraft, P. Breger, S. Le Pape, David Ros, Annie Klisnick
    Abstract:

    We give an overview of recent experimental results on Optical-Field-ionization collisional soft X-ray lasers developed at LOA. By focusing a 30-fs, circularly polarized Ti-sapphire laser pulse at an intensity of up to 8×10^17 Wcm^-2 into a low-density gas cell containing Xe or Kr, we produced a few mm long plasma column for soft X-ray amplifier. Saturated amplification has been achieved on the 4d^95d(1S0)–4^95p(1P1) transition at 41.8 nm in Xe8+, and on the 3d^94d(1S0)–3d^94p(1P1) transition in Kr8+ at 32.8 nm. Under optimum pumping conditions the Xe8+ laser provides about (5±2)×10^9 photons per pulse whilst the Kr8+ laser delivers up to (2.5±1)×10^9 photons per shot. The repetition rate of these soft X-ray lasers is 10 Hz. The beam wavefront of the Xe8+ laser has been measured by a Shack–Hartmann soft X-ray wavefront sensor, and the pulse duration by a cross-correlation technique.

  • Progress on collisionally pumped Optical-Field-ionization soft X-ray lasers
    IEEE Journal of Selected Topics in Quantum Electronics, 2004
    Co-Authors: Staphane Sebban, I. Bettaibi, G. Maynard, A.j. Gonzalves, C.m. Mckenna, D.j. Spence, Bernard Cros, Tomas Mocek, A Butler, S.m. Hooker
    Abstract:

    We present the status of Optical Field ionization soft X-ray lasers. The amplifying medium is generated by focusing a high-energy circularly polarized 30-fs 10-Hz Ti: sapphire laser system in a gaseous medium. Using xenon or krypton, strong laser emission at 41.8 and 32.8 nm, respectively, has been observed. After presenting the basis of the physics, we present recent characterization of the sources as well as dramatic improvement of their performances using the waveguiding technique.

Tomas Mocek - One of the best experts on this subject based on the ideXlab platform.

  • Characterization of the collisionally pumped Optical-Field-ionized soft-x-ray laser at 41.8 nm driven in capillary tubes
    Physical Review A, 2006
    Co-Authors: B. Cros, Staphane Sebban, I. Bettaibi, Tomas Mocek, G. Vieux, M. Farinet, J. Dubau, G. Maynard
    Abstract:

    We report on experimental and theoretical studies of a collisionally pumped, Optical-Field-ionized soft-x-ray laser (SXRL) at 41.8 nm driven in capillary tubes with smooth inner surface. A detailed experimental study has been conducted in order to understand the key effects related to guiding in this configuration. The amplifying plasma was created inside few-cm-long capillary tubes, and maximum extreme ultraviolet emission was obtained when operating in a multimode guiding regime with an optimized lasing signal from a 25-mm-long capillary a factor of 3 higher than that of a gas cell and with a beam divergence reduced by a factor of 3. A numerical code, named COFIXE, has been developed to calculate the SXRL signal emitted by the plasma source. It includes the calculation of the pump beam propagation, the determination of the plasma state just after the interaction with the pump beam, the calculation of the evolution of the local properties of the plasma during the subsequent few ps, and the calculation of the amplification and transport of the SXRL emission. Excellent agreement has been obtained between experiment and theory for several features such as the divergence of the beam, the correlation between guided pump beam transmission and SXRL energy, and the enhancement factor induced by guiding.

  • Progress in Optical-Field-ionization soft X-ray lasers at LOA
    Laser and Particle Beams, 2005
    Co-Authors: Tomas Mocek, Staphane Sebban, I. Bettaibi, G. Maynard, C.m. Mckenna, A Butler, B. Cros, Philippe Zeitoun, Gabriel Faivre, D.j. Spence
    Abstract:

    We give on overview of recent advances in collisionally pumped Optical Field-ionization soft X-ray lasers developed at LOA. Saturated amplification has been achieved on the 5d-5p transition in Xe^8+ at 41.8 nm, and on the 4d-4p transition in Kr^8+ at 32.8 nm. We demonstrate a significant increase of the energy output from the Xe^8+ laser driven within two types of wave-guide. Finally, we present results of a pioneering work aimed to set up and characterize the first true soft X-ray laser chain.

  • Characterization of collisionally pumped Optical-Field-ionization soft X-ray lasers
    Applied Physics B - Laser and Optics, 2004
    Co-Authors: Tomas Mocek, Staphane Sebban, I. Bettaibi, Philippe Balcou, Philippe Zeitoun, L. M. Upcraft, P. Breger, S. Le Pape, David Ros, Annie Klisnick
    Abstract:

    We give an overview of recent experimental results on Optical-Field-ionization collisional soft X-ray lasers developed at LOA. By focusing a 30-fs, circularly polarized Ti-sapphire laser pulse at an intensity of up to 8×10^17 Wcm^-2 into a low-density gas cell containing Xe or Kr, we produced a few mm long plasma column for soft X-ray amplifier. Saturated amplification has been achieved on the 4d^95d(1S0)–4^95p(1P1) transition at 41.8 nm in Xe8+, and on the 3d^94d(1S0)–3d^94p(1P1) transition in Kr8+ at 32.8 nm. Under optimum pumping conditions the Xe8+ laser provides about (5±2)×10^9 photons per pulse whilst the Kr8+ laser delivers up to (2.5±1)×10^9 photons per shot. The repetition rate of these soft X-ray lasers is 10 Hz. The beam wavefront of the Xe8+ laser has been measured by a Shack–Hartmann soft X-ray wavefront sensor, and the pulse duration by a cross-correlation technique.

  • Progress on collisionally pumped Optical-Field-ionization soft X-ray lasers
    IEEE Journal of Selected Topics in Quantum Electronics, 2004
    Co-Authors: Staphane Sebban, I. Bettaibi, G. Maynard, A.j. Gonzalves, C.m. Mckenna, D.j. Spence, Bernard Cros, Tomas Mocek, A Butler, S.m. Hooker
    Abstract:

    We present the status of Optical Field ionization soft X-ray lasers. The amplifying medium is generated by focusing a high-energy circularly polarized 30-fs 10-Hz Ti: sapphire laser system in a gaseous medium. Using xenon or krypton, strong laser emission at 41.8 and 32.8 nm, respectively, has been observed. After presenting the basis of the physics, we present recent characterization of the sources as well as dramatic improvement of their performances using the waveguiding technique.

  • Demonstration of a Collisionally Excited Optical-Field-Ionization XUV Laser Driven in a Plasma Waveguide
    Physical Review Letters, 2003
    Co-Authors: A Butler, Staphane Sebban, I. Bettaibi, C.m. Mckenna, D.j. Spence, S.m. Hooker, Tomas Mocek, A. J. Gonsalves, B. Cros
    Abstract:

    We describe the first demonstration of a collisionally excited Optical-Field-ionization laser driven within a waveguide. Lasing on the 4d^95d-4d^95p transition at 41.8 nm in Xe8+ was observed to be closely correlated to conditions under which the pump laser pulses were guided well by a gas-filled capillary discharge waveguide. Simulations of the propagation of the pump laser radiation show that gain was achieved over essentially the whole 30 mm length of the waveguide.

G. Maynard - One of the best experts on this subject based on the ideXlab platform.

  • High Density Optical-Field-Ionization Soft X-Ray Lasers
    2012
    Co-Authors: F. Tissandier, Staphane Sebban, Philippe Zeitoun, M. Kozlova, Julien Gautier, A. Klisnick, G. Maynard
    Abstract:

    Generating an Optical-Field-ionization (OFI) collisional soft X-ray laser amplifier in a high density plasma would allow a significant increase of the saturation intensity, laser gain, and reduction of the emitted pulse duration. Due to strong refraction of the pump infrared beam in the plasma, guiding techniques have to be implemented. Using an Optically preformed plasma waveguide, we successfully achieved guiding of J-energy pulses in a near-critical density krypton plasma with 50 % total transmission over 5 to 10 mm. X-ray lasing at 32.8 nm has also been demonstrated. This technique is a step towards OFI recombination soft X-ray lasers. This pumping scheme requires the production of a cold and dense plasma. We propose to pump a high density neon VIII plasma by a frequency doubled intense Ti:Sa laser. Guiding of the 405 nm pump pulse has already been achieved at LOA.

  • Characterization of the collisionally pumped Optical-Field-ionized soft-x-ray laser at 41.8 nm driven in capillary tubes
    Physical Review A, 2006
    Co-Authors: B. Cros, Staphane Sebban, I. Bettaibi, Tomas Mocek, G. Vieux, M. Farinet, J. Dubau, G. Maynard
    Abstract:

    We report on experimental and theoretical studies of a collisionally pumped, Optical-Field-ionized soft-x-ray laser (SXRL) at 41.8 nm driven in capillary tubes with smooth inner surface. A detailed experimental study has been conducted in order to understand the key effects related to guiding in this configuration. The amplifying plasma was created inside few-cm-long capillary tubes, and maximum extreme ultraviolet emission was obtained when operating in a multimode guiding regime with an optimized lasing signal from a 25-mm-long capillary a factor of 3 higher than that of a gas cell and with a beam divergence reduced by a factor of 3. A numerical code, named COFIXE, has been developed to calculate the SXRL signal emitted by the plasma source. It includes the calculation of the pump beam propagation, the determination of the plasma state just after the interaction with the pump beam, the calculation of the evolution of the local properties of the plasma during the subsequent few ps, and the calculation of the amplification and transport of the SXRL emission. Excellent agreement has been obtained between experiment and theory for several features such as the divergence of the beam, the correlation between guided pump beam transmission and SXRL energy, and the enhancement factor induced by guiding.

  • Progress in Optical-Field-ionization soft X-ray lasers at LOA
    Laser and Particle Beams, 2005
    Co-Authors: Tomas Mocek, Staphane Sebban, I. Bettaibi, G. Maynard, C.m. Mckenna, A Butler, B. Cros, Philippe Zeitoun, Gabriel Faivre, D.j. Spence
    Abstract:

    We give on overview of recent advances in collisionally pumped Optical Field-ionization soft X-ray lasers developed at LOA. Saturated amplification has been achieved on the 5d-5p transition in Xe^8+ at 41.8 nm, and on the 4d-4p transition in Kr^8+ at 32.8 nm. We demonstrate a significant increase of the energy output from the Xe^8+ laser driven within two types of wave-guide. Finally, we present results of a pioneering work aimed to set up and characterize the first true soft X-ray laser chain.

  • Progress on collisionally pumped Optical-Field-ionization soft X-ray lasers
    IEEE Journal of Selected Topics in Quantum Electronics, 2004
    Co-Authors: Staphane Sebban, I. Bettaibi, G. Maynard, A.j. Gonzalves, C.m. Mckenna, D.j. Spence, Bernard Cros, Tomas Mocek, A Butler, S.m. Hooker
    Abstract:

    We present the status of Optical Field ionization soft X-ray lasers. The amplifying medium is generated by focusing a high-energy circularly polarized 30-fs 10-Hz Ti: sapphire laser system in a gaseous medium. Using xenon or krypton, strong laser emission at 41.8 and 32.8 nm, respectively, has been observed. After presenting the basis of the physics, we present recent characterization of the sources as well as dramatic improvement of their performances using the waveguiding technique.

I. Bettaibi - One of the best experts on this subject based on the ideXlab platform.

  • Characterization of the collisionally pumped Optical-Field-ionized soft-x-ray laser at 41.8 nm driven in capillary tubes
    Physical Review A, 2006
    Co-Authors: B. Cros, Staphane Sebban, I. Bettaibi, Tomas Mocek, G. Vieux, M. Farinet, J. Dubau, G. Maynard
    Abstract:

    We report on experimental and theoretical studies of a collisionally pumped, Optical-Field-ionized soft-x-ray laser (SXRL) at 41.8 nm driven in capillary tubes with smooth inner surface. A detailed experimental study has been conducted in order to understand the key effects related to guiding in this configuration. The amplifying plasma was created inside few-cm-long capillary tubes, and maximum extreme ultraviolet emission was obtained when operating in a multimode guiding regime with an optimized lasing signal from a 25-mm-long capillary a factor of 3 higher than that of a gas cell and with a beam divergence reduced by a factor of 3. A numerical code, named COFIXE, has been developed to calculate the SXRL signal emitted by the plasma source. It includes the calculation of the pump beam propagation, the determination of the plasma state just after the interaction with the pump beam, the calculation of the evolution of the local properties of the plasma during the subsequent few ps, and the calculation of the amplification and transport of the SXRL emission. Excellent agreement has been obtained between experiment and theory for several features such as the divergence of the beam, the correlation between guided pump beam transmission and SXRL energy, and the enhancement factor induced by guiding.

  • Progress in Optical-Field-ionization soft X-ray lasers at LOA
    Laser and Particle Beams, 2005
    Co-Authors: Tomas Mocek, Staphane Sebban, I. Bettaibi, G. Maynard, C.m. Mckenna, A Butler, B. Cros, Philippe Zeitoun, Gabriel Faivre, D.j. Spence
    Abstract:

    We give on overview of recent advances in collisionally pumped Optical Field-ionization soft X-ray lasers developed at LOA. Saturated amplification has been achieved on the 5d-5p transition in Xe^8+ at 41.8 nm, and on the 4d-4p transition in Kr^8+ at 32.8 nm. We demonstrate a significant increase of the energy output from the Xe^8+ laser driven within two types of wave-guide. Finally, we present results of a pioneering work aimed to set up and characterize the first true soft X-ray laser chain.

  • Characterization of collisionally pumped Optical-Field-ionization soft X-ray lasers
    Applied Physics B - Laser and Optics, 2004
    Co-Authors: Tomas Mocek, Staphane Sebban, I. Bettaibi, Philippe Balcou, Philippe Zeitoun, L. M. Upcraft, P. Breger, S. Le Pape, David Ros, Annie Klisnick
    Abstract:

    We give an overview of recent experimental results on Optical-Field-ionization collisional soft X-ray lasers developed at LOA. By focusing a 30-fs, circularly polarized Ti-sapphire laser pulse at an intensity of up to 8×10^17 Wcm^-2 into a low-density gas cell containing Xe or Kr, we produced a few mm long plasma column for soft X-ray amplifier. Saturated amplification has been achieved on the 4d^95d(1S0)–4^95p(1P1) transition at 41.8 nm in Xe8+, and on the 3d^94d(1S0)–3d^94p(1P1) transition in Kr8+ at 32.8 nm. Under optimum pumping conditions the Xe8+ laser provides about (5±2)×10^9 photons per pulse whilst the Kr8+ laser delivers up to (2.5±1)×10^9 photons per shot. The repetition rate of these soft X-ray lasers is 10 Hz. The beam wavefront of the Xe8+ laser has been measured by a Shack–Hartmann soft X-ray wavefront sensor, and the pulse duration by a cross-correlation technique.

  • Progress on collisionally pumped Optical-Field-ionization soft X-ray lasers
    IEEE Journal of Selected Topics in Quantum Electronics, 2004
    Co-Authors: Staphane Sebban, I. Bettaibi, G. Maynard, A.j. Gonzalves, C.m. Mckenna, D.j. Spence, Bernard Cros, Tomas Mocek, A Butler, S.m. Hooker
    Abstract:

    We present the status of Optical Field ionization soft X-ray lasers. The amplifying medium is generated by focusing a high-energy circularly polarized 30-fs 10-Hz Ti: sapphire laser system in a gaseous medium. Using xenon or krypton, strong laser emission at 41.8 and 32.8 nm, respectively, has been observed. After presenting the basis of the physics, we present recent characterization of the sources as well as dramatic improvement of their performances using the waveguiding technique.

  • Demonstration of a Collisionally Excited Optical-Field-Ionization XUV Laser Driven in a Plasma Waveguide
    Physical Review Letters, 2003
    Co-Authors: A Butler, Staphane Sebban, I. Bettaibi, C.m. Mckenna, D.j. Spence, S.m. Hooker, Tomas Mocek, A. J. Gonsalves, B. Cros
    Abstract:

    We describe the first demonstration of a collisionally excited Optical-Field-ionization laser driven within a waveguide. Lasing on the 4d^95d-4d^95p transition at 41.8 nm in Xe8+ was observed to be closely correlated to conditions under which the pump laser pulses were guided well by a gas-filled capillary discharge waveguide. Simulations of the propagation of the pump laser radiation show that gain was achieved over essentially the whole 30 mm length of the waveguide.

Qiwen Zhan - One of the best experts on this subject based on the ideXlab platform.

  • Precise transverse alignment of a vectorial Optical-Field generator for complex Optical Field generation
    Complex Light and Optical Forces XI, 2017
    Co-Authors: Jian Chen, Chenhao Wan, Lingjiang Kong, Qiwen Zhan
    Abstract:

    Based on the Fraunhofer diffraction theory and the properties of dove prism, the coordinate relationships among the four spatial light modulator (SLM) sections in a vectorial Optical Field generator (VOF-Gen) are derived and experimentally verified. Taking the coordinate system of the first SLM section as reference, the coordinate displacements between the first SLM section and the subsequent ones are measured through employing the specially designed four-quadrant patterns with varying shifts of the corresponding cross point. Complex Optical Field could be accurately generated by combining the derived coordinate relationships and pre-compensation of the measured coordinate displacements. A typical complex Optical Field is generated and the experimental results demonstrate the validity of the proposed transverse alignment method for the VOF-Gen.

  • Creation of radially polarized Optical Fields with multiple controllable parameters using a vectorial Optical Field generator
    Photonics Research, 2016
    Co-Authors: Sichao Zhou, Jian Chen, Shiyi Wang, Guanghao Rui, Qiwen Zhan
    Abstract:

    A vectorial Optical Field generator (VOF-Gen) based on two reflective phase-only liquid crystal spatial light modulators enables the creation of an arbitrary Optical complex Field. In this work, the capabilities of the VOF-Gen in terms of manipulating the spatial distributions of phase, amplitude, and polarization are experimentally demonstrated by generating a radially polarized Optical Field consisted of five annular rings, the focusing properties of which are also numerically studied with vectorial diffraction theory. By carefully adjusting the relative amplitude and phase between the adjacent rings, an Optical needle Field with purely longitudinal polarization can be produced in the focal region of a high numerical aperture lens. The versatile method presented in this work can be easily extended to the generation of a vectorial Optical Field with any desired complex distributions.

  • Vectorial Optical Field generator for the creation of arbitrarily complex Fields
    Optics express, 2013
    Co-Authors: Wei Han, Yanfang Yang, Wen Cheng, Qiwen Zhan
    Abstract:

    Generation of vectorial Optical Fields with complex spatial distribution in the cross section is of great interest in areas where exotic Optical Fields are desired, including particle manipulation, Optical nanofabrication, beam shaping and Optical imaging. In this work, a vectorial Optical Field generator capable of creating arbitrarily complex beam cross section is designed, built and tested. Based on two reflective phase-only liquid crystal spatial light modulators, this generator is capable of controlling all the parameters of the spatial distributions of an Optical Field, including the phase, amplitude and polarization (ellipticity and orientation) on a pixel-by-pixel basis. Various Optical Fields containing phase, amplitude and/or polarization modulations are successfully generated and tested using Stokes parameter measurement to demonstrate the capability and versatility of this Optical Field generator.