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).]. This sub-10-fs DUV source has a similar performance to widely used noncollinear optical parametric amplifiers.
© 2012 Optical Society of America
Original Manuscript: May 29, 2012
Revised Manuscript: July 25, 2012
Manuscript Accepted: August 15, 2012
Published: September 10, 2012
Yuichiro Kida, Kotaro Okamura, Jun Liu, and Takayoshi Kobayashi, "Sub-10-fs deep-ultraviolet light source with stable power and spectrum," Appl. Opt. 51, 6403-6410 (2012)