DIFFERENCE OF SPECTRAL SUPERBROADENING BEHAVIOR IN KERR-TYPE AND NON-KERR-TYPE LIQUIDS PUMPED WITH ULTRASHORT LASER-PULSES

Citation
Gs. He et al., DIFFERENCE OF SPECTRAL SUPERBROADENING BEHAVIOR IN KERR-TYPE AND NON-KERR-TYPE LIQUIDS PUMPED WITH ULTRASHORT LASER-PULSES, Applied optics, 32(24), 1993, pp. 4507-4512
Citations number
20
Categorie Soggetti
Optics
Journal title
ISSN journal
00036935
Volume
32
Issue
24
Year of publication
1993
Pages
4507 - 4512
Database
ISI
SICI code
0003-6935(1993)32:24<4507:DOSSBI>2.0.ZU;2-Q
Abstract
The spectral superbroadening behavior of forward coherent radiation fr om a lo-cm-long liquid-filled cell is investigated by using an ultrash ort (approximately 0.5 ps) and intense (approximately 10 GW/cm2) laser pulse as the pump source. Five different transparent liquids (heavy w ater, water, carbon tetrachloride, benzene, and carbon disulfide) have been studied with a special experimental design that can distinguish the predominant contributions from the various possible mechanisms. Un der the same pump condition, a very wide and symmetrical superbroadeni ng (continuum) is observed on both the Stokes and the anti-Stokes side of the pump line for non-Kerr-type liquids such as heavy water and wa ter, whereas only a red-shifted spectral broadening can be observed on the Stokes side for Kerr-type liquids such as carbon disulfide and be nzene. For an explanation of the latter behavior, the dominant contrib utions from stimulated Rayleigh-Kerr and Raman-Kerr scattering are pro posed.