2-PHOTON ABSORPTION IN DIAMOND AND ITS APPLICATION TO ULTRAVIOLET FEMTOSECOND PULSE-WIDTH MEASUREMENT

被引：84

作者：

DADAP, JI

FOCHT, GB

REITZE, DH

DOWNER, MC

机构：

[1] Department of Physics, University of Texas at Austin, Austin, TX

来源：

OPTICS LETTERS | 1991年 / 16卷 / 07期

关键词：

D O I：

10.1364/OL.16.000499

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Intensity-dependent transmission measurements of 310-nm femtosecond pulses show that diamond has a two-photon absorption coefficient of 0.75 +/- 0.15 cm/GW, in approximate agreement with universal scaling formulas for two-photon absorption in diamond-structure materials. We then demonstrate that two-photon absorption is strong enough to permit simple measurements of ultraviolet femtosecond pulse widths in single-crystal diamond plates that are thin enough (250-mu-m) to be both inexpensive and dispersion free. Autocorrelation measurements of 10-50-nJ, 0.18-1.4-ps pulses are presented. The method requires no phase matching and can be applied to pulses in the wavelength range of 220-550 nm.

引用

页码：499 / 501

页数：3

共 28 条

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