Frequency shifting through cascaded second-order processes in a N-(4-nitrophenyl)-L-prolinol crystal

被引:30
作者
Banfi, GP
Datta, PK
Degiorgio, V
Donelli, G
Fortusini, D
Sherwood, JN
机构
[1] Univ Pavia, Ist Nazl Fis Mat, I-27100 Pavia, Italy
[2] Univ Pavia, Dipartimento Elettron, I-27100 Pavia, Italy
[3] Univ Strathclyde, Dept Pure & Appl Chem, Glasgow G1 1XL, Lanark, Scotland
关键词
D O I
10.1364/OL.23.000439
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We exploit the high second-order susceptibility of the organic crystal N-(4-nitrophenyl)-L-prolinol to accomplish, through a cascaded second-order process, wavelength conversion of a signal pulse (from 1.16 to 1.14 mu m) under the action of a pump pulse (at 1.15 mu m). In a 2.8-mm-thick crystal, wavelength conversion with unit gain was obtained with a pump peak intensity as low as 9 MW/cm(2). At low intensities, in the limit of negligible conversion where the cascading effect can be described through an effective third-order susceptibility, we derive \chi(eff)((3))\ approximate to 2.4 x 10(-17) m(2)/V-2, which is similar to 10(2) larger than the nonresonant chi((3)) of conjugated polymers or semiconductors. (C) 1998 Optical Society of America.
引用
收藏
页码:439 / 441
页数:3
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