Phase conjugation at SBS of CPA-modulated profiled laser pulses

Gennady G. Kochemasov; Fedor A. Starikov; Vladimir K. Ladagin; V. A. Eroshenko

doi:10.1117/12.382780

14 April 2000 Phase conjugation at SBS of CPA-modulated profiled laser pulses

Gennady G. Kochemasov, Fedor A. Starikov, Vladimir K. Ladagin, V. A. Eroshenko

Proceedings Volume 3929, Solid State Lasers IX; (2000) https://doi.org/10.1117/12.382780
Event: Symposium on High-Power Lasers and Applications, 2000, San Jose, CA, United States

Abstract

The calculations of the phase conjugation at the stimulated Brilloiun scattering (SBS) of the laser pulse specific for such powerful laser facilities as NIF, MEGAJOULE, ISKRA-6 are carried out. A computer code based on the most complete in literature physical and numerical model of non-steady- state SBS is applied for this purpose. Transient processes and an effect of Stokes field on laser one (the laser pump depletion) are included. The possibility is demonstrated of obtaining the phase conjugation of the profiled laser pulse with temporal phase CPA modulation needed for ICF experiments in order to replace an adaptive mirror in multi- pass laser scheme by an SBS mirror. The laser spectral line width is greatly larger than the SBS spectral line width. It is obtained that the phase conjugation of broad-band laser focused beam with the complicated temporal power profile is feasible. When a minimal laser coherence length scale (dealt with an inverse width of spectral line) is more than or of order of a beam waist length, the Stokes beam is characterized by the high phase conjugation quality that is about 97%. At the enhancement of the laser modulation frequency, when the coherence length is shorter than the beam waist length by 10 times, the phase conjugation fidelity reduces to 80% and the SBS threshold rises.

Citation Download Citation

Gennady G. Kochemasov, Fedor A. Starikov, Vladimir K. Ladagin, and V. A. Eroshenko "Phase conjugation at SBS of CPA-modulated profiled laser pulses", Proc. SPIE 3929, Solid State Lasers IX, (14 April 2000); https://doi.org/10.1117/12.382780

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available