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Stuart D. Jackson - One of the best experts on this subject based on the ideXlab platform.

  • watt level dysprosium Fiber laser at 3 15 μm with 73 slope efficiency
    Optics Letters, 2018
    Co-Authors: R I Woodward, Matthew R Majewski, Gayathri Bharathan, Darren D Hudson, Alexander Fuerbach, Stuart D. Jackson
    Abstract:

    Rare-Earth-Doped Fiber lasers are emerging as promising high-power mid-infrared sources for the 2.6–3.0 μm and 3.3–3.8 μm regions based on erbium and holmium ions. The intermediate wavelength range, however, remains vastly underserved, despite prospects for important manufacturing and defense applications. Here, we demonstrate the potential of dysprosium-doped Fiber to solve this problem, with a simple in-band pumped grating-stabilized linear cavity generating up to 1.06 W at 3.15 μm. A slope efficiency of 73% with respect to launched power (77% relative to absorbed power) is achieved—the highest value for any mid-infrared Fiber laser to date, to the best of our knowledge. Opportunities for further power and efficiency scaling are also discussed.

  • dysprosium doped zblan Fiber laser tunable from 2 8 μm to 3 4 μm pumped at 1 7 μm
    Optics Letters, 2018
    Co-Authors: Matthew R Majewski, R I Woodward, Stuart D. Jackson
    Abstract:

    We demonstrate a mid-infrared dysprosium-doped fluoride Fiber laser with a continuously tunable output range of 573 nm, pumped by a 1.7 μm Raman Fiber laser. To the best of our knowledge, this represents the largest tuning range achieved to date from any Rare-Earth-Doped Fiber laser and, critically, spans the 2.8–3.4 μm spectral region, which contains absorption resonances of many important functional groups and is uncovered by other rare-earth ions. Output powers up to 170 mW are achieved, with 21% slope efficiency. We also discuss the relative merits of the 1.7 μm pump scheme, including possible pump excited-state absorption.

  • dysprosium doped zblan Fiber laser tunable from 2 8 mu m to 3 4 mu m pumped at 1 7 mu m
    arXiv: Optics, 2018
    Co-Authors: Matthew R Majewski, R I Woodward, Stuart D. Jackson
    Abstract:

    We demonstrate a mid-infrared dysprosium-doped fluoride Fiber laser with a continuously tunable output range of 573 nm, pumped by a 1.7 {\mu}m Raman Fiber laser. To the best of our knowledge, this represents the largest tuning range achieved to date from any Rare-Earth-Doped Fiber laser and, critically, spans the 2.8-3.4 {\mu}m spectral region, which contains absorption resonances of many important functional groups and is uncovered by other rare-earth ions. Output powers up to 170 mW are achieved, with 21% slope efficiency. We also discuss the relative merits of the 1.7 {\mu}m pump scheme, including possible pump excited-state absorption.

  • versatile and widely tunable mid infrared erbium doped zblan Fiber laser
    Optics Letters, 2016
    Co-Authors: Ori Hendersonsapir, Stuart D. Jackson, D J Ottaway
    Abstract:

    We report on a long wavelength emitting rare earth doped Fiber laser with the emission centered at 3.5 μm and tunable across 450 nm. The longest wavelength emission was 3.78 μm which is the longest emission from a Fiber laser operating at room temperature. In a simple optical arrangement employing dielectric mirrors for feedback, the laser was capable of emitting 1.45 W of near diffraction limited output power at 3.47 μm. These emission characteristics complement the emissions from quantum cascade lasers and demonstrate how all infrared dual wavelength pumping can be used to access high lying rare earth ion transitions that have previously relied on visible wavelength pumping.

  • versatile and widely tunable mid infrared erbium doped zblan Fiber laser
    arXiv: Optics, 2016
    Co-Authors: Ori Hendersonsapir, Stuart D. Jackson, D J Ottaway
    Abstract:

    We report on a long wavelength emitting rare earth doped Fiber laser with emission centered at 3.5 {\mu}m and tunable across 450 nm. The longest wavelength emission was 3.78 {\mu}m, which is the longest emission from a Fiber laser operating at room temperature. In a simple optical arrangement employing dielectric mirrors for feedback, the laser was capable of emitting 1.45 W of near diffraction limited output power at 3.47 {\mu}m. These emission characteristics compliment the emission from quantum cascade lasers and demonstrate how all infrared dual wavelength pumping can be used to access high lying rare earth ion transitions that have previously relied on visible wavelength pumping.

D J Ottaway - One of the best experts on this subject based on the ideXlab platform.

  • versatile and widely tunable mid infrared erbium doped zblan Fiber laser
    Optics Letters, 2016
    Co-Authors: Ori Hendersonsapir, Stuart D. Jackson, D J Ottaway
    Abstract:

    We report on a long wavelength emitting rare earth doped Fiber laser with the emission centered at 3.5 μm and tunable across 450 nm. The longest wavelength emission was 3.78 μm which is the longest emission from a Fiber laser operating at room temperature. In a simple optical arrangement employing dielectric mirrors for feedback, the laser was capable of emitting 1.45 W of near diffraction limited output power at 3.47 μm. These emission characteristics complement the emissions from quantum cascade lasers and demonstrate how all infrared dual wavelength pumping can be used to access high lying rare earth ion transitions that have previously relied on visible wavelength pumping.

  • versatile and widely tunable mid infrared erbium doped zblan Fiber laser
    arXiv: Optics, 2016
    Co-Authors: Ori Hendersonsapir, Stuart D. Jackson, D J Ottaway
    Abstract:

    We report on a long wavelength emitting rare earth doped Fiber laser with emission centered at 3.5 {\mu}m and tunable across 450 nm. The longest wavelength emission was 3.78 {\mu}m, which is the longest emission from a Fiber laser operating at room temperature. In a simple optical arrangement employing dielectric mirrors for feedback, the laser was capable of emitting 1.45 W of near diffraction limited output power at 3.47 {\mu}m. These emission characteristics compliment the emission from quantum cascade lasers and demonstrate how all infrared dual wavelength pumping can be used to access high lying rare earth ion transitions that have previously relied on visible wavelength pumping.

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

  • watt level dysprosium Fiber laser at 3 15 μm with 73 slope efficiency
    Optics Letters, 2018
    Co-Authors: R I Woodward, Matthew R Majewski, Gayathri Bharathan, Darren D Hudson, Alexander Fuerbach, Stuart D. Jackson
    Abstract:

    Rare-Earth-Doped Fiber lasers are emerging as promising high-power mid-infrared sources for the 2.6–3.0 μm and 3.3–3.8 μm regions based on erbium and holmium ions. The intermediate wavelength range, however, remains vastly underserved, despite prospects for important manufacturing and defense applications. Here, we demonstrate the potential of dysprosium-doped Fiber to solve this problem, with a simple in-band pumped grating-stabilized linear cavity generating up to 1.06 W at 3.15 μm. A slope efficiency of 73% with respect to launched power (77% relative to absorbed power) is achieved—the highest value for any mid-infrared Fiber laser to date, to the best of our knowledge. Opportunities for further power and efficiency scaling are also discussed.

  • dysprosium doped zblan Fiber laser tunable from 2 8 μm to 3 4 μm pumped at 1 7 μm
    Optics Letters, 2018
    Co-Authors: Matthew R Majewski, R I Woodward, Stuart D. Jackson
    Abstract:

    We demonstrate a mid-infrared dysprosium-doped fluoride Fiber laser with a continuously tunable output range of 573 nm, pumped by a 1.7 μm Raman Fiber laser. To the best of our knowledge, this represents the largest tuning range achieved to date from any Rare-Earth-Doped Fiber laser and, critically, spans the 2.8–3.4 μm spectral region, which contains absorption resonances of many important functional groups and is uncovered by other rare-earth ions. Output powers up to 170 mW are achieved, with 21% slope efficiency. We also discuss the relative merits of the 1.7 μm pump scheme, including possible pump excited-state absorption.

  • dysprosium doped zblan Fiber laser tunable from 2 8 mu m to 3 4 mu m pumped at 1 7 mu m
    arXiv: Optics, 2018
    Co-Authors: Matthew R Majewski, R I Woodward, Stuart D. Jackson
    Abstract:

    We demonstrate a mid-infrared dysprosium-doped fluoride Fiber laser with a continuously tunable output range of 573 nm, pumped by a 1.7 {\mu}m Raman Fiber laser. To the best of our knowledge, this represents the largest tuning range achieved to date from any Rare-Earth-Doped Fiber laser and, critically, spans the 2.8-3.4 {\mu}m spectral region, which contains absorption resonances of many important functional groups and is uncovered by other rare-earth ions. Output powers up to 170 mW are achieved, with 21% slope efficiency. We also discuss the relative merits of the 1.7 {\mu}m pump scheme, including possible pump excited-state absorption.

Matthew R Majewski - One of the best experts on this subject based on the ideXlab platform.

  • watt level dysprosium Fiber laser at 3 15 μm with 73 slope efficiency
    Optics Letters, 2018
    Co-Authors: R I Woodward, Matthew R Majewski, Gayathri Bharathan, Darren D Hudson, Alexander Fuerbach, Stuart D. Jackson
    Abstract:

    Rare-Earth-Doped Fiber lasers are emerging as promising high-power mid-infrared sources for the 2.6–3.0 μm and 3.3–3.8 μm regions based on erbium and holmium ions. The intermediate wavelength range, however, remains vastly underserved, despite prospects for important manufacturing and defense applications. Here, we demonstrate the potential of dysprosium-doped Fiber to solve this problem, with a simple in-band pumped grating-stabilized linear cavity generating up to 1.06 W at 3.15 μm. A slope efficiency of 73% with respect to launched power (77% relative to absorbed power) is achieved—the highest value for any mid-infrared Fiber laser to date, to the best of our knowledge. Opportunities for further power and efficiency scaling are also discussed.

  • dysprosium doped zblan Fiber laser tunable from 2 8 μm to 3 4 μm pumped at 1 7 μm
    Optics Letters, 2018
    Co-Authors: Matthew R Majewski, R I Woodward, Stuart D. Jackson
    Abstract:

    We demonstrate a mid-infrared dysprosium-doped fluoride Fiber laser with a continuously tunable output range of 573 nm, pumped by a 1.7 μm Raman Fiber laser. To the best of our knowledge, this represents the largest tuning range achieved to date from any Rare-Earth-Doped Fiber laser and, critically, spans the 2.8–3.4 μm spectral region, which contains absorption resonances of many important functional groups and is uncovered by other rare-earth ions. Output powers up to 170 mW are achieved, with 21% slope efficiency. We also discuss the relative merits of the 1.7 μm pump scheme, including possible pump excited-state absorption.

  • dysprosium doped zblan Fiber laser tunable from 2 8 mu m to 3 4 mu m pumped at 1 7 mu m
    arXiv: Optics, 2018
    Co-Authors: Matthew R Majewski, R I Woodward, Stuart D. Jackson
    Abstract:

    We demonstrate a mid-infrared dysprosium-doped fluoride Fiber laser with a continuously tunable output range of 573 nm, pumped by a 1.7 {\mu}m Raman Fiber laser. To the best of our knowledge, this represents the largest tuning range achieved to date from any Rare-Earth-Doped Fiber laser and, critically, spans the 2.8-3.4 {\mu}m spectral region, which contains absorption resonances of many important functional groups and is uncovered by other rare-earth ions. Output powers up to 170 mW are achieved, with 21% slope efficiency. We also discuss the relative merits of the 1.7 {\mu}m pump scheme, including possible pump excited-state absorption.

V. R. Supradeepa - One of the best experts on this subject based on the ideXlab platform.

  • all passive architecture for high efficiency cascaded raman conversion
    Optics Express, 2018
    Co-Authors: V Balaswamy, S Arun, G Chayran, V. R. Supradeepa
    Abstract:

    Cascaded Raman Fiber lasers have offered a convenient method to obtain scalable, high-power sources at various wavelength regions inaccessible with rare-earth doped Fiber lasers. A limitation previously was the reduced efficiency of these lasers. Recently, new architectures have been proposed to enhance efficiency, but this came at the cost of enhanced complexity, requiring an additional low-power, cascaded Raman laser. In this work, we overcome this with a new, all-passive architecture for high-efficiency cascaded Raman conversion. We demonstrate our architecture with a fifth-order cascaded Raman converter from 1117nm to 1480nm with output power of similar to 64W and efficiency of 60%. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

  • power scaling of high efficiency 1 5 μm cascaded raman Fiber lasers
    Optics Letters, 2013
    Co-Authors: V. R. Supradeepa
    Abstract:

    High-power Fiber lasers operating at the 1.5 μm wavelength region have attractive features, such as eye safety and atmospheric transparency, and cascaded Raman Fiber lasers offer a convenient method to obtain high-power sources at these wavelengths. A limitation to power scaling, however, has been the lower conversion efficiency of these lasers. We recently introduced a high-efficiency architecture for high-power cascaded Raman Fiber lasers applicable for 1.5 μm Fiber lasers. Here we demonstrate further power scaling using this new architecture. Using numerical simulations, we identify the ideal operating conditions for the new architecture. We demonstrate a high-efficiency 1480 nm cascaded Raman Fiber laser with an output power of 301 W, comparable to record power levels achieved with Rare-Earth-Doped Fiber lasers in the 1.5 μm wavelength region.

  • power scaling of high efficiency 1 5micron cascaded raman Fiber lasers
    arXiv: Optics, 2013
    Co-Authors: V. R. Supradeepa, J W Nicholson
    Abstract:

    High power Fiber lasers operating at the 1.5micron wavelength region have attractive features like eye-safety and atmospheric transparency, and cascaded Raman Fiber lasers offer a convenient method to obtain high power sources at these wavelengths. A limitation to power scaling however has been the lower conversion efficiency of these lasers. We recently introduced a high efficiency architecture for high power cascaded Raman Fiber lasers applicable for 1.5micron Fiber lasers. Here we demonstrate further power scaling using this new architecture. Using numerical simulations we identify the ideal operating conditions for the new architecture. We demonstrate a high efficiency 1480nm cascaded Raman Fiber laser with an output power of 301 W, comparable to record power levels achieved with rare-earth doped Fiber lasers in the 1.5 micron wavelength region.