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This article is cited in 6 scientific papers (total in 6 papers)
Self-focusing limitation of brightness in amplification of ultrashort pulses in neodymium glass and yttrium aluminum garnet
A. N. Zherikhin, Yu. A. Matveets, S. V. Chekalin
Abstract:
An experimental investigation was made of ultrashort pulses generated in yttrium aluminum garnet (YAG) and amplified in YAG and neodymium glass. When the power density was less than 3–5 GW/cm2, the main mechanism which limited the amplified power was large-scale self-focusing of the amplified radiation in the active media, which altered greatly the laser beam divergence. Conditions were found under which this self-focusing was avoided completely. The investigated self-focusing produced, around the main beam, a scattered-radiation halo of divergence much greater than the beam divergence. The proportion of the laser beam energy lost to the halo increased with the amplification, so that beginning from a certain stage further amplification simply resulted in a reduction in the brightness. In this situation the enrgy density in the amplified beam could still be below the damage threshold of the active medium.
Received: 18.09.1975
Citation:
A. N. Zherikhin, Yu. A. Matveets, S. V. Chekalin, “Self-focusing limitation of brightness in amplification of ultrashort pulses in neodymium glass and yttrium aluminum garnet”, Kvantovaya Elektronika, 3:7 (1976), 1585–1590 [Sov J Quantum Electron, 6:7 (1976), 858–860]
Linking options:
https://www.mathnet.ru/eng/qe11709 https://www.mathnet.ru/eng/qe/v3/i7/p1585
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