A single source femtosecond-millisecond broadband spectrometer

被引：14

作者：

Carroll, E. C. ^{[1
]}

Hill, M. P. ^{[1
]}

Madsen, D. ^{[1
]}

Malley, K. R. ^{[1
]}

Larsen, D. S. ^{[1
]}

机构：

[1] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2009年 / 80卷 / 02期

关键词：

high-speed optical techniques; photoexcitation; spectrometers; triplet state; LASER FLASH-PHOTOLYSIS; PHOTONIC CRYSTAL FIBER; EXCITED-STATE; SPECTROSCOPY; DYNAMICS;

D O I：

10.1063/1.3070516

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Time-resolved measurement of population dynamics extending over femtosecond to millisecond time scales typically requires a combination of transient absorption techniques involving different laser systems and detection schemes. The spectrometer design presented here facilitates transient absorption measurements over 12 decades with a single ultrafast laser system by picking pump and probe pulses independently from the laser oscillator pulse train. Unamplified pulses seed a photonic crystal fiber to a supercontinuum probe source for spectrally resolved measurements. The utility of the system is demonstrated by measuring triplet state dynamics following photoexcitation of vitamin B-6 in aqueous solution.

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页数：3

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