Efficient Ho: YAG laser pumped by a cladding-pumped tunable Tm: silica-fibre laser

D. Y.  Shen; A. Abdolvand; L. J. Cooper; W. A.  Clarkson

doi:10.1007/s00340-004-1562-y

Efficient Ho: YAG laser pumped by a cladding-pumped tunable Tm: silica-fibre laser

D. Y. Shen, A. Abdolvand, L. J. Cooper, W. A. Clarkson

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114 Citations (Scopus)

Abstract

Highly efficient room-temperature operation of a Ho:YAG laser end pumped by a cladding-pumped tunable Tm-doped silica-fibre laser operating at 1905 nm is reported. Using a simple two-mirror resonator configuration, we obtained 6.4 W of unpolarized output at 2097 nm in a diffraction-limited TEM00 beam (with M-2 approximate to 1.1) for 9.6 W of incident pump power, corresponding to a slope efficiency with respect to incident pump power of 80% and an optical-to-optical efficiency of 67%. Using a folded-resonator configuration incorporating a Brewster-angled glass plate, we obtained 5.8 W of linearly polarized TEM00 output, corresponding to an optical-to-optical efficiency of similar to 60%. Due to low quantum defect heating, the depolarization loss due to thermally induced birefringence in the Ho: YAG crystal was < 0.14% at the maximum available pump power, indicating that there is scope for further power scaling.

Original language	English
Pages (from-to)	559-561
Number of pages	3
Journal	Applied Physics B: Lasers and Optics
Volume	79
Issue number	5
DOIs	https://doi.org/10.1007/s00340-004-1562-y
Publication status	Published - 2004

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title = "Efficient Ho: YAG laser pumped by a cladding-pumped tunable Tm: silica-fibre laser",

abstract = "Highly efficient room-temperature operation of a Ho:YAG laser end pumped by a cladding-pumped tunable Tm-doped silica-fibre laser operating at 1905 nm is reported. Using a simple two-mirror resonator configuration, we obtained 6.4 W of unpolarized output at 2097 nm in a diffraction-limited TEM00 beam (with M-2 approximate to 1.1) for 9.6 W of incident pump power, corresponding to a slope efficiency with respect to incident pump power of 80% and an optical-to-optical efficiency of 67%. Using a folded-resonator configuration incorporating a Brewster-angled glass plate, we obtained 5.8 W of linearly polarized TEM00 output, corresponding to an optical-to-optical efficiency of similar to 60%. Due to low quantum defect heating, the depolarization loss due to thermally induced birefringence in the Ho: YAG crystal was < 0.14% at the maximum available pump power, indicating that there is scope for further power scaling.",

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T2 - YAG laser pumped by a cladding-pumped tunable Tm: silica-fibre laser

AU - Shen, D. Y.

AU - Abdolvand, A.

AU - Cooper, L. J.

AU - Clarkson, W. A.

PY - 2004

Y1 - 2004

N2 - Highly efficient room-temperature operation of a Ho:YAG laser end pumped by a cladding-pumped tunable Tm-doped silica-fibre laser operating at 1905 nm is reported. Using a simple two-mirror resonator configuration, we obtained 6.4 W of unpolarized output at 2097 nm in a diffraction-limited TEM00 beam (with M-2 approximate to 1.1) for 9.6 W of incident pump power, corresponding to a slope efficiency with respect to incident pump power of 80% and an optical-to-optical efficiency of 67%. Using a folded-resonator configuration incorporating a Brewster-angled glass plate, we obtained 5.8 W of linearly polarized TEM00 output, corresponding to an optical-to-optical efficiency of similar to 60%. Due to low quantum defect heating, the depolarization loss due to thermally induced birefringence in the Ho: YAG crystal was < 0.14% at the maximum available pump power, indicating that there is scope for further power scaling.

AB - Highly efficient room-temperature operation of a Ho:YAG laser end pumped by a cladding-pumped tunable Tm-doped silica-fibre laser operating at 1905 nm is reported. Using a simple two-mirror resonator configuration, we obtained 6.4 W of unpolarized output at 2097 nm in a diffraction-limited TEM00 beam (with M-2 approximate to 1.1) for 9.6 W of incident pump power, corresponding to a slope efficiency with respect to incident pump power of 80% and an optical-to-optical efficiency of 67%. Using a folded-resonator configuration incorporating a Brewster-angled glass plate, we obtained 5.8 W of linearly polarized TEM00 output, corresponding to an optical-to-optical efficiency of similar to 60%. Due to low quantum defect heating, the depolarization loss due to thermally induced birefringence in the Ho: YAG crystal was < 0.14% at the maximum available pump power, indicating that there is scope for further power scaling.

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DO - 10.1007/s00340-004-1562-y

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IS - 5

ER -

Efficient Ho: YAG laser pumped by a cladding-pumped tunable Tm: silica-fibre laser

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