61:
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of the spectral bandwidth of gain and/or length of partial lasers. The same conclusion can be made also on the base of more detailed simulations. Practically, the combination of more than ten lasers with a passive combining arrangement appears to be difficult. However, active coherent combining of
73:
The addition of lasers reduces the number of longitudinal modes in the output beam; the more lasers are combined, the smaller is the number of longitudinal modes in the output. The simple estimates show that the number of output modes reduces exponentially with the number of lasers combined. Of
87:
Nonlinear interactions of light waves are used widely to synchronize the laser beams in multichannel optical systems. Self-adjusting of phases may be robustly achievable in binary-tree array of beam-splitters and degenerate four-wave mixing Kerr
49:. As the ability of pumping and/or cooling of a single laser is saturated, several similar lasers can be forced to oscillate in phase with a common coupler. The first nonlinear theory of the coherent addition of laser sets had been developed by
53:
with co-workers in 1965. For Nd:YAG laser set beam combination had been realized by means of SBS phase conjugating mirror. The coherent addition was demonstrated in power scaling of
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121:
199:
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176:
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484:
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Bowers, M W; Boyd, R W; Hankla, A K (1997). "Brillouin-enhanced four-wave-mixing vector phase-conjugate mirror with beam-combining capability".
627:
Basov, N G; Zubarev, I G; Mironov, A B; Michailov, S I; Okulov, A Yu (1980). "Laser interferometer with wavefront reversing mirrors".
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A.E.Siegman. Resonant modes of linearly coupled multiple fiber laser structures. Preprint of the
Stanford University, 2005, 25 pages;
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Laser beam combination of a dozens fiber laser via multispectral technique at 50 kW output power level had been implemented in
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order of eight lasers can be combined in such a way. The future increase of number of combined lasers requires the
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as well. Talbot phase-locking techniques are applicable to thin disk diode-pumped solid-state laser arrays.
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extreme light facilities. This phase-conjugating
Michelson interferometer increases the brightness as
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Okulov, A Yu (2014). "Coherent chirped pulse laser network with
Mickelson phase conjugator".
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Okulov, A Yu (1993). "Scaling of diode-array-pumped solid-state lasers via self-imaging".
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Coherent femtosecond pulse combining of multiple parallel chirped pulse fiber amplifiers
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Constructive interference due to Talbot self-imaging forces the lasers in the array to
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Basov, NG; Belenov, EM; Letokhov, VS (1965). "Diffraction synchronization of lasers".
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31:
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Okulov, A Yu (1990). "Two-dimensional periodic structures in nonlinear resonator".
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Fig.1. Example of the coherent addition of 4 fiber lasers with a common coupler.
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Leo A. Siiman, Wei-zung Chang, Tong Zhou, and
Almantas Galvanauskas, "
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lasers has the potential to scale to very large numbers of channels.
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element laser array phase-locked by Talbot cavity
Fresnel number
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Coherent addition of fiber lasers by use of a fiber coupler
34:. It allows increasing the output power and brightness of
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laser system with promising deployment at onboard future
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http://www.stanford.edu/~siegman/coupled_fiber_modes.pdf
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Limits of
Coherent Addition of Lasers: Simple Estimate
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A. Shirakawa, T. Saitou, T. Sekiguchi and K. Ueda: "
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D. Kouznetsov, J.F. Bisson. A. Shirakawa, K.Ueda "
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201:element laser array phase-locked by
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606:"The Nobel Prize in Physics 2018"
499:, No. 6, 445–447 (2005). (Also
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16:Method of laser power scaling
711:10.1016/0030-4018(93)90342-3
94:Chirped pulse amplification
69:Limits of coherent addition
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241:For the two-dimensional
234:{\displaystyle F=N^{2}.}
147:Talbot coherent addition
317:{\displaystyle F=N^{2}}
178:of the one-dimensional
153:transverse mode locking
36:single-transversal mode
676:10.1364/JOSAB.7.001045
357:List of laser articles
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264:{\displaystyle N^{2}-}
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116:{\displaystyle N^{2}}
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432:10.1364/OL.22.000360
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703:1993OptCo..99..350O
668:1990JOSAB...7.1045O
641:1980ZhETF..79.1678B
568:2014ApOpt..53.2302O
424:1997OptL...22..360B
350:BAE Systems Tempest
334:Dragonfire (weapon)
608:. Nobel Foundation
534:(2012) 18097-18116
487:2007-09-27 at the
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194:{\displaystyle N-}
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76:exponential growth
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41:Usually, the term
24:coherent combining
552:(11): 2302–2311.
389:10.1117/12.160374
284:{\displaystyle F}
171:{\displaystyle F}
136:{\displaystyle N}
90:Phase conjugation
43:coherent addition
20:Coherent addition
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55:Raman lasers
47:fiber lasers
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691:Opt. Commun
291:scales as
45:applies to
635:(5): 847.
383:(2): 845.
363:References
340:warships,
338:Royal Navy
612:2 October
592:118343729
559:1311.6703
397:110333595
259:−
189:−
724:Category
584:24787398
485:Archived
448:25530526
440:18183201
123:, where
699:Bibcode
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637:Bibcode
564:Bibcode
420:Bibcode
38:laser.
656:JOSA B
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155:. The
28:lasers
588:S2CID
554:arXiv
495:Vol.
444:S2CID
393:S2CID
26:) of
614:2018
580:PMID
436:PMID
22:(or
707:doi
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572:doi
428:doi
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92:in
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310:2
306:N
302:=
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254:2
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220:N
216:=
213:F
186:N
166:F
131:N
109:2
105:N
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