Phasing of several gain channels for coherent and spectral combining of laser beams

Journal Article · Sun Sep 30 00:00:00 EDT 2012 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2012V042N09ABEH014958· OSTI ID:22069464

Pyrkov, Yu N; Trikshev, A I; Tsvetkov, V B ^[1]

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1. A M Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

A system for maintaining a constant phase difference between several laser channels is designed and an algorithm of its operation under a slow (with a characteristic time of no less than 100 ms) variation in the radiation phase in a channel is developed. Different possible regimes of operation of the measurement system and versions for phase difference maintaining are analysed and an optimal algorithm is elaborated. Long-term stable operation of the system under thermal and mechanical effects on the active medium is experimentally demonstrated by the example of a seven-channel fibre amplifier with a working wavelength of 1.064 {mu}m. (optical fibres, lasers and amplifiers. properties and applications)

• OSTI ID: 22069464
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 42, Issue 9; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALGORITHMS
AMPLIFIERS
BEAM SHAPING
GAIN
LASERS
MECHANICAL PROPERTIES
OPTICAL FIBERS
PHOTON BEAMS
THERMODYNAMIC PROPERTIES
WAVELENGTHS