High sensitive schemes for optical phase conjugation with great reflectivity of signal wave

Andrei N. Ponomarev; Vladimir I. Odintsov

doi:10.1117/12.184624

16 August 1994 High sensitive schemes for optical phase conjugation with great reflectivity of signal wave

Andrei N. Ponomarev, Vladimir I. Odintsov

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.

Citation Download Citation

Andrei N. Ponomarev and 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); https://doi.org/10.1117/12.184624

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