Sub-10-fs deep-ultraviolet light source with stable power and spectrum

Yuichiro Kida; Kotaro Okamura; Jun Liu; Takayoshi Kobayashi

doi:10.1364/ao.51.006403

Sub-10-fs deep-ultraviolet light source with stable power and spectrum

Appl Opt. 2012 Sep 10;51(26):6403-10. doi: 10.1364/ao.51.006403.

Authors

Yuichiro Kida¹, Kotaro Okamura, Jun Liu, Takayoshi Kobayashi

Affiliation

¹ Advanced Ultrafast Laser Research Center, University of Electro-Communications, Chofugaoka, Chofu, Tokyo, Japan.

PMID: 22968281
DOI: 10.1364/ao.51.006403

Abstract

In some applications of ultrafast spectroscopy that employ sub-10-fs pulses, the pulse spectrum and power need to be stable for several tens of minutes. In this study, we generate sub-10-fs deep-ultraviolet (DUV) pulses with such stabilities by chirped-pulse four-wave mixing. A power fluctuation of less than 3% rms was realized by employing stabilization schemes that employ a power stabilizer. The pulses generated in this study have been applied to transient absorption spectroscopy in the DUV with a sub-10-fs time resolution [Phys. Chem. Chem. Phys.14, 6200 (2012).10.1039/c2cp23649d]. This sub-10-fs DUV source has a similar performance to widely used noncollinear optical parametric amplifiers.