| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
|
|
|
|
Experimental Observation of Near-Field Deterioration Induced by Stimulated Rotational Raman Scattering in Long Air Paths |
| WANG Jing, ZHANG Xiao-Min, HAN Wei, LI Fu-Quan, ZHOU Li-Dan**, FENG Bin, XIANG Yong
|
Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900
|
|
| Cite this article: |
|
WANG Jing, ZHANG Xiao-Min, HAN Wei et al 2011 Chin. Phys. Lett. 28 084211 |
|
|
|
|
Abstract We report the experimental investigation of a stimulated rotational Raman scattering effect in long air paths on SG-III TIL, with a 1053 nm, 20-cm-diameter, linearly polarized, 3 ns flat-topped laser pulse. An intense speckle pattern of near field with thickly dotted hot spots is observed at the end of propagation with an intensity-length product above 17 TW/cm. The Stokes developing from the scattering of the laser beam by quantum fluctuations is characterized by a combination of high spatial frequency components. The observed speckle pattern with small-diameter hot spots results from the combination of the nonlinear Raman amplification and the linear diffraction propagation effect of the Stokes with a noise pattern arising from the spontaneous Raman scattering. A new promising suppression concept based on the special characteristic of the Stokes, called active and selective filtering of Stokes, is proposed.
|
| Keywords:
42.65.-k
34.50.-s
|
|
|
Received: 14 October 2010
Published: 28 July 2011
|
|
|
|
|
|
|
|
[1] Henesian M A, Swift C D and Murray J R 1985 Opt. Lett. 10 565
[2] Henesian M A, Swift C D and Murray J R 2007 Summary of Stimulated Raman Sattering Experiments in the Nova Air-Path and Projected Nova and Nova II System Performance Limits UCRL-TR-234110
[3] Lin Y, Kessler T J and Armstrong J 1993 Proc. SPIE 1870 14
[4] Lin Y, Kessler T J and Lawrence G N 1994 Appl. Opt. 33 4781
[5] Bordenave E and Chies T 2006 J. Phys. IV (France) 133 661
[6] Thiell G, Graillot H and Joly P 1999 Fusion Engin. Design 44 157
[7] Kurnit N A, Shimada T and Sorem M S 1987 Measurement and Control of Optical Nonlinearities of Importance to Glass Laser Fusion Systems Los Alamos National Laboratory Report LAUR 87-0097
[8] Wegenr P, Auerbach J and Biesiada T 2004 Proc. SPIE 5431 181
[9] Rokni M and Flusberg A 1986 IEEE J. Quan. Electron. 22 1102
[10] Carman R L, Shimizu F, Wang C S and Bloembergen N 1970 Phys. Rev. A 2 60
[11] Raymer M G 1981 Phys. Rev. A 24 1980
[12] Skeldon M D and Bahr R 1991 Opt. Lett. 16 366
[13] Ludman J E, Riccobono J and Reihend N 1996 Quantum Electron. 26 103
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
