16 August 1994 High sensitive schemes for optical phase conjugation with great reflectivity of signal wave
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Proceedings Volume 2206, High-Power Gas and Solid State Lasers; (1994) https://doi.org/10.1117/12.184624
Event: Europto High Power Lasers and Laser Applications V, 1994, Vienna, Austria
Abstract
It is shown that optical phase conjugation with the great reflectivity of the weak signal wave can be obtained without the conjugate reference waves in schemes based on parametric instability of stimulated Brillouin scattering in the system of intersections of power pump wave and weak signal wave. Consideration of schemes with two and more beam intersections is presented. Both cases of intensive and weak waves with equal and different frequencies, and the case when one or both waves are wideband, are investigated. The parametric instability conditions determining parametric generation are obtained. The depletion of the pump wave is taken into consideration. The reflectivities and thresholds of the weak signal wave as a function of the pump wave intensity are determined. It is shown that for equal frequencies of pump and signal waves (omega) L1 equals (omega) L2 an increase of the intersecting number N increases the scheme sensitivity and reflectivity. For (omega) L1 does not equal (omega) L2 these parameters weakly depend upon N. It's shown that spontaneous emission noise limits the ultimate sensitivity of these schemes at high pump intensities.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Andrei N. Ponomarev, Vladimir I. Odintsov, "High sensitive schemes for optical phase conjugation with great reflectivity of signal wave", Proc. SPIE 2206, High-Power Gas and Solid State Lasers, (16 August 1994); doi: 10.1117/12.184624; https://doi.org/10.1117/12.184624
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