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- W2012173906 abstract "Different schemes were investigated to reduce the power threshold of phase conjugating mirrors based on stimulated Brillouin scattering (SBS). Two methods will be discussed in detail: A phase conjugating SBS-mirror based on multimode glass fibers and an SBS-based beam clean up arrangement. With a fiber phase conjugator we have investigated a continuously pumped Q-switched MOPA-system with SBS phase conjugation. The used fibers were characterized with respect to their reflectivity and power threshold at different repetition rates up to 20 kHz. Typical power thresholds are in the range of 200 W. The master oscillator consists of a ring resonator with an acousto-optical modulator to realize the Q-switch and a high coherence length of six meters. The beam is amplified in a double pass scheme with the fiber phase conjugator after the first pass to compensate phase distortions introduced by the amplifier. To remain the system relatively simple Nd:YALO was used as active medium to avoid depolarization effects. The beam clean up arrangement improves the beam quality outside the laser system. It is based on two wave mixing in an SBS- medium. An oscillator amplifier system was realized with such a beam clean up system based on carbon disulfide." @default.
- W2012173906 created "2016-06-24" @default.
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- W2012173906 date "1998-05-27" @default.
- W2012173906 modified "2023-10-16" @default.
- W2012173906 title "High-repetition-rate continuously pumped solid state lasers with phase conjugation" @default.
- W2012173906 doi "https://doi.org/10.1117/12.308673" @default.
- W2012173906 hasPublicationYear "1998" @default.
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