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[SPIE] High-power highly-efficient wavelength stabilized pumps
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https://doi.org/10.1117/12.2612101 N. Moshegov, I. Berezin, P. Trubenko, A. Komissarov, M. Ermolaev, I. Shifrovich, I. Berishev, I. Mukhametzhanov, V. Chuyanov, B. Johns, F. Kompan, D. Miftakhutdinov, A. Ovtchinnikov, and V. Gapontsev "High-power highly-efficient wavelength stabilized pumps operating in 8xx-9xx nm range", Proc. SPIE 11983, High-Power Diode Laser Technology XX, 1198308 (4 March 2022) Abstract Solid State and Fiber Lasers performance benefits from utilizing highly efficient high brightness wavelength-stabilized pumps. Full wavelength locking in the wide range of operating current and heatsink temperature significantly simplifies overall construction of the Solid State and Fiber Lasers. Thus, stability of lasing wavelength against current and temperature variation has recently become an additional imperative requirement. We report on high power multimode pumps that operate at 878.6nm and 975nm. We discuss on chips’ and packaged pumps’ performance that features high power conversion efficiency (PCE) (up to 60% ex-fiber) and full wavelength locking (40-45 dB) in the wide range of driving current. Laser diode chip and packaged pump devices are produced by high-volume scalable technology which ensures full wavelength stabilization in the wide range of heatsink temperatures (10°C to 50°C range). We present performance of several 878.6nm pump models rated to operate reliably in 30W-120W power range as well as performance of 975nm pumps designed for high efficiency operation at elevated temperature.
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