Abstract
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 μm) 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.
© 1991 Optical Society of America
Full Article | PDF ArticleMore Like This
Alexandre M. Streltsov, Jinendra K. Ranka, and Alexander L. Gaeta
Opt. Lett. 23(10) 798-800 (1998)
Nils Fabian Kleimeier, Thorben Haarlammert, Henrik Witte, Udo Schühle, Jean-Francois Hochedez, Ali BenMoussa, and Helmut Zacharias
Opt. Express 18(7) 6945-6956 (2010)
M. Müller, J. Squier, and G. J. Brakenhoff
Opt. Lett. 20(9) 1038-1040 (1995)