Tunable picosecond optical parametric generator-amplifier system for time resolved Raman spectroscopy

被引：66

作者：

Towrie, M ^{[1
]}

Parker, AW ^{[1
]}

Shaikh, W ^{[1
]}

Matousek, P ^{[1
]}

机构：

[1] Rutherford Appleton Lab, Cent Laser Facil, Didcot OX11 0QX, Oxon, England

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 1998年 / 9卷 / 05期

关键词：

D O I：

10.1088/0957-0233/9/5/012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new concept 1 kHz repetition rate 1 ps time resolved resonance Raman (TR3) apparatus based on optical parametric amplifiers (OPAs) has been developed, The two purpose built OPAs are pumped simultaneously by a titanium sapphire regenerative amplifier. Each OPA provides several microjoules of energy per pulse, is tunable from 470 to 2200 nm and the spectral bandwidth of the probe beam is maintained at about 20 cm(-1) across this tuning range by spectrally filtering the light pulse during the OPA process. Further wavelength coverage down to ultraviolet wavelengths is achieved by using frequency mixing of the OPA outputs with the regenerative amplifier. The potential this unique system has for obtaining the vibrational spectra of photoexcited transients is demonstrated by presenting some preliminary results obtained from several TR3 spectroscopy experiments.

引用

页码：816 / 823

页数：8

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