The Experts below are selected from a list of 20655 Experts worldwide ranked by ideXlab platform
H E Meissner - One of the best experts on this subject based on the ideXlab platform.
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continuous wave and passively q switched cladding pumped Planar Waveguide lasers
Optics Letters, 2001Co-Authors: R J Beach, H E Meissner, Scott C Mitchell, O R Meissner, W F Krupke, J M Mcmahon, W J Bennett, D P ShepherdAbstract:Greater than 12 W of average output power has been generated from a diode-pumped Yb:YAG cladding-pumped Planar Waveguide laser. The laser radiation developed is linearly polarized and diffraction limited in the guiding dimension. A slope efficiency of 0.5 W/W with a peak optical–optical conversion efficiency of 0.31 W/W is achieved. In a related structure, greater than 8 W of Q-switched average output power has been generated from a Nd:YAG cladding-pumped Planar Waveguide laser by incorporation of a Cr4+:YAG passive Q switch monolithically into the Waveguide structure. Pulse widths of 3 ns and pulse-repetition frequencies as high as 80 kHz have been demonstrated. A slope efficiency of 0.28 W/W with a peak optical–optical conversion efficiency of 0.21 W/W is achieved.
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thermally bonded Planar Waveguide lasers
Applied Physics Letters, 1997Co-Authors: C T A Brown, C L Bonner, T J Warburton, Anne C. Tropper, D P Shepherd, D C Hanna, H E MeissnerAbstract:A new technique for fabricating active Planar Waveguide devices is reported. This process, based on the thermal bonding of precision finished crystal or glass components, allows Waveguides to be assembled from very dissimilar materials and could be applied to a wide range of solid state laser or other optical media. The Waveguide propagation losses, inferred from the laser performance, are found to be 0.7dB/cm for Nd:Y3Al5O12 bonded to Y3Al5O12, Nd:Y3Al5O12 bonded to glass, and 0.4dB/cm for Nd:Gd3Ga5O12 bonded to Y3Al5O12 devices.
D P Shepherd - One of the best experts on this subject based on the ideXlab platform.
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continuous wave and passively q switched cladding pumped Planar Waveguide lasers
Optics Letters, 2001Co-Authors: R J Beach, H E Meissner, Scott C Mitchell, O R Meissner, W F Krupke, J M Mcmahon, W J Bennett, D P ShepherdAbstract:Greater than 12 W of average output power has been generated from a diode-pumped Yb:YAG cladding-pumped Planar Waveguide laser. The laser radiation developed is linearly polarized and diffraction limited in the guiding dimension. A slope efficiency of 0.5 W/W with a peak optical–optical conversion efficiency of 0.31 W/W is achieved. In a related structure, greater than 8 W of Q-switched average output power has been generated from a Nd:YAG cladding-pumped Planar Waveguide laser by incorporation of a Cr4+:YAG passive Q switch monolithically into the Waveguide structure. Pulse widths of 3 ns and pulse-repetition frequencies as high as 80 kHz have been demonstrated. A slope efficiency of 0.28 W/W with a peak optical–optical conversion efficiency of 0.21 W/W is achieved.
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double clad structures and proximity coupling for diode bar pumped Planar Waveguide lasers
IEEE Journal of Quantum Electronics, 2000Co-Authors: C L Bonner, T. Bhutta, D P Shepherd, Anne C. TropperAbstract:We report, for the first time, fabrication of double-clad Planar Waveguide structures and their use for multiwatt, diode-bar-pumped, Planar Waveguide lasers based on Nd/sup 3+/ and Yb/sup 3+/-doped YAG. The direct-bonded, five-layer structures of sapphire, YAG, and rare-earth-doped YAG have sufficient numerical aperture to capture the fast-axis divergence of a diode bar by proximity coupling with no intervening optics, leading to very simple and compact devices. The restriction of the doped region to the central core leads to diffraction-limited laser output in the guided direction. We also show that the direct-bonding fabrication process can lead to a linearly polarized output.
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thermally bonded Planar Waveguide lasers
Applied Physics Letters, 1997Co-Authors: C T A Brown, C L Bonner, T J Warburton, Anne C. Tropper, D P Shepherd, D C Hanna, H E MeissnerAbstract:A new technique for fabricating active Planar Waveguide devices is reported. This process, based on the thermal bonding of precision finished crystal or glass components, allows Waveguides to be assembled from very dissimilar materials and could be applied to a wide range of solid state laser or other optical media. The Waveguide propagation losses, inferred from the laser performance, are found to be 0.7dB/cm for Nd:Y3Al5O12 bonded to Y3Al5O12, Nd:Y3Al5O12 bonded to glass, and 0.4dB/cm for Nd:Gd3Ga5O12 bonded to Y3Al5O12 devices.
Lew Stolpner - One of the best experts on this subject based on the ideXlab platform.
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performance of Planar Waveguide external cavity laser for precision measurements
Optics Express, 2010Co-Authors: Kenji Numata, J B Camp, Michael A Krainak, Lew StolpnerAbstract:A 1542-nm Planar-Waveguide external cavity laser (PW-ECL) is shown to have a sufficiently low level of noise to be suitable for precision measurement applications. Its frequency noise and intensity noise was comparable or better than the non-Planar ring oscillator (NPRO) and fiber laser between 0.1 mHz to 100 kHz. Controllability of the PW-ECL was demonstrated by stabilizing its frequency to acetylene (13C2H2) at 10−13 level of Allan deviation. The PW-ECL also has the advantage of the compactness of a standard butterfly package, low cost, and a simple design consisting of a semiconductor gain media coupled to a Planar-Waveguide Bragg reflector.
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performance of Planar Waveguide external cavity laser for precision measurements
Optics Express, 2010Co-Authors: Kenji Numata, J B Camp, Michael A Krainak, Lew StolpnerAbstract:A 1542-nm Planar-Waveguide external cavity laser (PW-ECL) is shown to have a sufficiently low level of noise to be suitable for precision measurement applications. Its frequency noise and intensity noise was comparable or better than the non-Planar ring oscillator (NPRO) and fiber laser between 0.1 mHz to 100 kHz. Controllability of the PW-ECL was demonstrated by stabilizing its frequency to acetylene ((13)C(2)H(2)) at 10(-13) level of Allan deviation. The PW-ECL also has the advantage of the compactness of a standard butterfly package, low cost, and a simple design consisting of a semiconductor gain media coupled to a Planar-Waveguide Bragg reflector.
Christos Grivas - One of the best experts on this subject based on the ideXlab platform.
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optically pumped Planar Waveguide lasers part ii gain media laser systems and applications
Progress in Quantum Electronics, 2016Co-Authors: Christos GrivasAbstract:Abstract The field of optically pumped Planar Waveguide lasers has seen a rapid development over the last two decades driven by the requirements of a range of applications. This sustained research effort has led to the demonstration of a large variety of miniature highly efficient laser sources by combining different gain media and resonator geometries. One of the most attractive features of Waveguide lasers is the broad range of regimes that they can operate, spanning from continuous wave and single frequency through to the generation of femtosecond pulses. Furthermore, their technology has experienced considerable advances to provide increased output power levels, deriving benefits from the relative immunity from the heat generated in the gain medium during laser operation and the use of cladding-pumped architectures. This second part of the review on optically pumped Planar Waveguide lasers provides a snapshot of the state-of-the-art research in this field in terms of gain materials, laser system designs, and as well as a perspective on the status of their application as real devices in various research areas.
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low threshold highly efficient gd3 lu3 co doped ky wo4 2 yb3 Planar Waveguide lasers
Laser Physics Letters, 2009Co-Authors: Dimitri Geskus, Christos Grivas, S Aravazhi, E H Bernhardi, Sybolt Harkema, Kathrin Hametner, Detlef Gunther, Kerstin Worhoff, Markus PollnauAbstract:High-quality crystalline $KY(WO_4)_2:Yb^{3+}$ layers codoped with large concentrations of optically inert Gd3+ and Lu3+ ions were grown by liquid phase epitaxy. Continuous-wave laser operation in a Planar Waveguide configuration was observed at 1025 nm. For 23% output coupling, a maximum output power of 195 mW was obtained; a slope efficiency of 82.3% was derived, which to the best of our knowledge is the highest value yet reported for a Planar Waveguide laser to date. For 1.7% output coupling, a laser threshold as low as 18 mW of absorbed pump power was achieved, which is largely due to the enhanced refractive index contrast of ~$7.5\times 10^{-3}$ between the active layer and the undoped $KY(WO_4)_2$ substrate attained by the co-doping, leading to well-confined pump and laser modes
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Planar Waveguide structures created by PLD
ALT'97 International Conference on Laser Surface Processing, 1998Co-Authors: M. Jelínek, Christos Grivas, J. Šonský, L. Jastrabík, Jan Laneok, Costas Fotakis, Alan A. Anderson, Robert W. Eason, Francois FloryAbstract:In this work an overview of active Planar Waveguide systems created by various technologies and especially by method of pulsed laser deposition (PLD) is given. Parameters of created Planar Waveguide lasers are summarized. Our experiences with laser deposition and characterization of thin films of Ti:sapphire, Nd:YAG and Nd:YAP are presented. For film deposition a KrF excimer laser was used. Film properties were characterized by XRD, mode spectroscopy, and by study of attenuation and luminescence spectra. Films exhibit waveguiding properties. The Waveguide losses as low as 1 dB/cm for Ti:sapphire/sapphire and 0.5 dB/cm for Nd:YAP/(0001)sapphire were measured.
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Planar Waveguide lasers created by pulsed laser deposition
Ninth International School on Quantum Electronics: Lasers--Physics and Applications, 1996Co-Authors: M. Jelínek, Christos Grivas, J. Lančok, L. Jastrabík, Costas Fotakis, Alan A. Anderson, Robert W. Eason, Francois FloryAbstract:Properties and data of materials for creation of Planar Waveguide lasers and properties of suitable substrates are summarized. Parameters of published lasers are overviewed. Parameters of active and passive Planar Waveguides created by method of pulsed laser deposition are described. Results of our experiments of laser deposition of thin T:sapphire layers on (0001) quartz substrates are presented. Up to 4 waveguiding modes in created layers were observed and attenuation of 6.8 dB/cm was measured.
Anne C. Tropper - One of the best experts on this subject based on the ideXlab platform.
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double clad structures and proximity coupling for diode bar pumped Planar Waveguide lasers
IEEE Journal of Quantum Electronics, 2000Co-Authors: C L Bonner, T. Bhutta, D P Shepherd, Anne C. TropperAbstract:We report, for the first time, fabrication of double-clad Planar Waveguide structures and their use for multiwatt, diode-bar-pumped, Planar Waveguide lasers based on Nd/sup 3+/ and Yb/sup 3+/-doped YAG. The direct-bonded, five-layer structures of sapphire, YAG, and rare-earth-doped YAG have sufficient numerical aperture to capture the fast-axis divergence of a diode bar by proximity coupling with no intervening optics, leading to very simple and compact devices. The restriction of the doped region to the central core leads to diffraction-limited laser output in the guided direction. We also show that the direct-bonding fabrication process can lead to a linearly polarized output.
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thermally bonded Planar Waveguide lasers
Applied Physics Letters, 1997Co-Authors: C T A Brown, C L Bonner, T J Warburton, Anne C. Tropper, D P Shepherd, D C Hanna, H E MeissnerAbstract:A new technique for fabricating active Planar Waveguide devices is reported. This process, based on the thermal bonding of precision finished crystal or glass components, allows Waveguides to be assembled from very dissimilar materials and could be applied to a wide range of solid state laser or other optical media. The Waveguide propagation losses, inferred from the laser performance, are found to be 0.7dB/cm for Nd:Y3Al5O12 bonded to Y3Al5O12, Nd:Y3Al5O12 bonded to glass, and 0.4dB/cm for Nd:Gd3Ga5O12 bonded to Y3Al5O12 devices.