Electronic phasing of high power fiber amplifier arrays

A novel robust phase locking architecture has demonstrated coherent beam combination 725-W from five 145-W fiber amplifiers. The technique uses a single photodetector and no reference beam. The measured rms phase error was lambda/60.

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Bibliographic Details
Main Authors: Shay, T.M., Baker, J.T., Robin, C.A., Vergien, C., Zerinque, C., Gallant, D., Sanchez, A.D., Pilkington, D., Lu, C.A., Bronder, J.
Format: Conference Proceeding
Language:English
Subjects:
Fiber nonlinear optics
High power amplifiers
Laser beams
Optical feedback
Optical fibers
Phase control
Phase modulation
Phased arrays
Photodetectors
Radio frequency
Online Access:Request full text
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Description
Summary:A novel robust phase locking architecture has demonstrated coherent beam combination 725-W from five 145-W fiber amplifiers. The technique uses a single photodetector and no reference beam. The measured rms phase error was lambda/60.
ISSN:1092-8081
2766-1733
DOI:10.1109/LEOS.2008.4688854