Hybrid Beam Combination by Active Phasing and Bandwidth-Controlled Dichromatic Mirror

In this letter, we present what we believe to be a new design for simultaneously coherent and spectral beam combinations by active phasing and bandwidth-controlled dichromatic mirror. A principle of concept experiment is demonstrated by employing eight 20-W power-level polarization-maintained all fi...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 27; no. 19; pp. 2099 - 2102
Main Authors Ma, Pengfei, Jiang, Man, Wang, Xiaolin, Ma, Yanxing, Zhou, Pu, Liu, Zejin
Format Journal Article
LanguageEnglish
Published IEEE 01.10.2015
Subjects
coherent beam combination
Fiber amplifiers
Laser beams
Measurement by laser beam
Optical fiber amplifiers
Optical fiber polarization
Optimized production technology
Power amplifiers
Power generation
spectral beam combination
Fiber amplifiers
coherent beam combination
spectral beam combination
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Summary:In this letter, we present what we believe to be a new design for simultaneously coherent and spectral beam combinations by active phasing and bandwidth-controlled dichromatic mirror. A principle of concept experiment is demonstrated by employing eight 20-W power-level polarization-maintained all fiber amplifiers, which generate a 142.1-W near diffraction limited (M x 2 ~1.1 and M y 2 ~ 1.1 ) output power with the whole combining efficiency of >90%. The new designed beam combining system is competent for both narrow-band and broadband gain elements with full linewidth of <;4nm. Along with the near-diffraction-limited power scaling progress on monolithic polarization-maintained amplifier, we believe that the approach demonstrated has great potential for remarkable power boosting in both continuous- and pulsed-wave operations.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2015.2453356