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Compact Vertically Stacked Master Oscillator Power Amplifier Based On Grating Coupled Laser Diodes
Authors
Eric G. Johnson
Jason K. O\u27Daniel
Oleg V. Smolski
Publication date
15 September 2006
Publisher
'Information Bulletin on Variable Stars (IBVS)'
Abstract
A new design of hybrid master oscillator power amplifier (MOPA) has been proposed and realized by vertically stacking laser diodes with optical coupling provided by identical in-plane integrated gratings. Low beam divergence, large emitting and input areas of the grating coupled devices simplify the assembling technique over the fabrication of MOPA devices based on edge-emitting laser diodes. The master oscillator also incorporates a dual-grating reflector providing a wavelength-selective feedback resulting in a narrow emission spectrum of 0.2 nm at a wavelength of 975.4 nm. The power amplifier is a tapered chip with two integrated grating couplers. The operational characteristics of the MOPA were evaluated in the pulse regime demonstrating an output peak power of 32 W with a total amplification factor of 9.3 dB. © 2006 IEEE
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Last time updated on 18/10/2022