کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1539132 | 996629 | 2009 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Broadband four-wave optical parametric amplification in bulk isotropic media in the ultraviolet Broadband four-wave optical parametric amplification in bulk isotropic media in the ultraviolet](/preview/png/1539132.png)
We report on four-wave optical parametric amplification of the ultrashort ultraviolet light pulses in bulk fused silica and CaF2CaF2. Exact phase-matching in these isotropic media is achieved by means of non-collinear interaction with cylindrical beam focusing. Four-wave optical parametric amplifier efficiently operates in the UV spectral range with 1-ps laser pulses, delivering amplified signal energy exceeding 50 μJ using millijoule pump pulses in the visible (527 nm). Results of scanning of the parametric gain profile suggest that broad amplification bandwidth as wide as ∼20 nm (at FWHM) under these experimental settings is achieved, which might support amplification of sub-10-fs ultraviolet pulses with central wavelength around 330 nm. It is also shown experimentally and verified theoretically that the parametric gain profile exposes a distinct inhomogeneity and its bandwidth notably broadens due to effects of self- and cross-phase modulation imposed by the intense pump beam.
Journal: Optics Communications - Volume 282, Issue 14, 15 July 2009, Pages 2995–2999