Development of edge pumped Yb: YAG planar waveguide lasers

H. J. Baker; J. F. Monjardin; I. Thomson; N. Trela; J. D R Valera; D. R. Hall

doi:10.1117/12.774124

Development of edge pumped Yb: YAG planar waveguide lasers

H. J. Baker, J. F. Monjardin, I. Thomson, N. Trela, J. D R Valera, D. R. Hall

School of Engineering & Physical Sciences

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Citations (Scopus)

Abstract

A waveguide with 150 µm core height of 2% Yb:YAG between sapphire claddings is core-pumped at 480W by diode bars coupled into the 13 mm long edge-facet. The pump unit has custom correction of collimation errors and lens aberrations. Using a 6mm width and 7° edge-facet angle, power is limited by competing ASE loss or parasitic oscillation along TIR-trapped internal paths, giving 40 W output for stable and 25 W for unstable resonators. Ray-tracing shows a 20° facet angle is necessary to successfully out-couple ASE from the core. Preliminary operation at 90W and an increased threshold for the parasitic oscillation are obtained.

Original language	English
Title of host publication	Solid State Lasers XVII: Technology and Devices
Volume	6871
DOIs	https://doi.org/10.1117/12.774124
Publication status	Published - 2008
Event	Physics and Simulation of Optoelectronic Devices XVI - San Jose, CA, United States Duration: 21 Jan 2008 → 24 Jan 2008

Conference

Conference	Physics and Simulation of Optoelectronic Devices XVI
Country/Territory	United States
City	San Jose, CA
Period	21/01/08 → 24/01/08

Keywords

Light trapping modeling
Planar waveguide laser
Ytterbium:YAG

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10.1117/12.774124

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title = "Development of edge pumped Yb: YAG planar waveguide lasers",

abstract = "A waveguide with 150 µm core height of 2% Yb:YAG between sapphire claddings is core-pumped at 480W by diode bars coupled into the 13 mm long edge-facet. The pump unit has custom correction of collimation errors and lens aberrations. Using a 6mm width and 7° edge-facet angle, power is limited by competing ASE loss or parasitic oscillation along TIR-trapped internal paths, giving 40 W output for stable and 25 W for unstable resonators. Ray-tracing shows a 20° facet angle is necessary to successfully out-couple ASE from the core. Preliminary operation at 90W and an increased threshold for the parasitic oscillation are obtained.",

keywords = "Light trapping modeling, Planar waveguide laser, Ytterbium:YAG",

author = "Baker, {H. J.} and Monjardin, {J. F.} and I. Thomson and N. Trela and Valera, {J. D R} and Hall, {D. R.}",

year = "2008",

doi = "10.1117/12.774124",

language = "English",

isbn = "9780819470461",

volume = "6871",

booktitle = "Solid State Lasers XVII: Technology and Devices",

note = "Physics and Simulation of Optoelectronic Devices XVI ; Conference date: 21-01-2008 Through 24-01-2008",

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T1 - Development of edge pumped Yb

T2 - Physics and Simulation of Optoelectronic Devices XVI

AU - Baker, H. J.

AU - Monjardin, J. F.

AU - Thomson, I.

AU - Trela, N.

AU - Valera, J. D R

AU - Hall, D. R.

PY - 2008

Y1 - 2008

N2 - A waveguide with 150 µm core height of 2% Yb:YAG between sapphire claddings is core-pumped at 480W by diode bars coupled into the 13 mm long edge-facet. The pump unit has custom correction of collimation errors and lens aberrations. Using a 6mm width and 7° edge-facet angle, power is limited by competing ASE loss or parasitic oscillation along TIR-trapped internal paths, giving 40 W output for stable and 25 W for unstable resonators. Ray-tracing shows a 20° facet angle is necessary to successfully out-couple ASE from the core. Preliminary operation at 90W and an increased threshold for the parasitic oscillation are obtained.

AB - A waveguide with 150 µm core height of 2% Yb:YAG between sapphire claddings is core-pumped at 480W by diode bars coupled into the 13 mm long edge-facet. The pump unit has custom correction of collimation errors and lens aberrations. Using a 6mm width and 7° edge-facet angle, power is limited by competing ASE loss or parasitic oscillation along TIR-trapped internal paths, giving 40 W output for stable and 25 W for unstable resonators. Ray-tracing shows a 20° facet angle is necessary to successfully out-couple ASE from the core. Preliminary operation at 90W and an increased threshold for the parasitic oscillation are obtained.

KW - Light trapping modeling

KW - Planar waveguide laser

KW - Ytterbium:YAG

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U2 - 10.1117/12.774124

DO - 10.1117/12.774124

M3 - Conference contribution

SN - 9780819470461

VL - 6871

BT - Solid State Lasers XVII: Technology and Devices

Y2 - 21 January 2008 through 24 January 2008

ER -

Development of edge pumped Yb: YAG planar waveguide lasers

Abstract

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Keywords

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