Coherent combining of diode laser beams in a master oscillator - zigzag slab power amplifier system

An integrated zigzag laser diode amplifier, with each segment (zigzag) consisting of three sections, is considered. The operation of this amplifier is analysed. It is shown that the presence of three sections with independent pump currents makes it possible to combine coherently all amplifier output...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2019-11, Vol.49 (11), p.1014-1018
Main Authors: Bogatov, A.P., Drakin, A.E., Mikaelyan, G.T.
Format: Article
Language:English
Subjects:
BEAMS
BRIGHTNESS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
coherent beam combining
diode optical amplifier
FLUCTUATIONS
Laser beams
LASERS
OSCILLATORS
PHASE SHIFT
Phase shifters
POWER AMPLIFIERS
PUMPING
Semiconductor lasers
Variation
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Summary:An integrated zigzag laser diode amplifier, with each segment (zigzag) consisting of three sections, is considered. The operation of this amplifier is analysed. It is shown that the presence of three sections with independent pump currents makes it possible to combine coherently all amplifier output beams. The first two sections in this configuration play the role of a phase shifter, and the third serves as a power amplifier. The influence of fluctuations of the output radiation phase in each segment on the resulting brightness of total output beam of the entire amplifier is investigated.
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL17086