Tunable kHz deep ultraviolet (193-210 nm) laser for Raman applications

被引：45

作者：

Balakrishnan, G ^{[1
]}

Hu, Y ^{[1
]}

Nielsen, SB ^{[1
]}

Spiro, TG ^{[1
]}

机构：

[1] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA

来源：

APPLIED SPECTROSCOPY | 2005年 / 59卷 / 06期

关键词：

deep ultraviolet laser; resonance Raman; deep ultravioletRaman; hemoglobin; Raman excitation profile; Raman intensity standard; gaseous O-2 and N-2; aromatic amino acids;

D O I：

10.1366/0003702054280702

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The performance characteristics of a kilohertz solid-state laser source for ultraviolet Raman spectroscopy are described. Deep ultraviolet (UV) excitation in the 193-210 nm region is provided by mixing of the fundamental and third harmonies of a Ti-sapphire laser, which is pumped by the second harmonic of a Q-Switched Nd-YLF laser. The combination of tunability, narrow linewidth, high average power, good stability, and kilohertz repetition rate makes this laser suitable for deep UV resonance Raman applications. The short pulse duration (similar to 20 ns) permits nanosecond time resolution in pump-probe applications. The low peak power and high data rate provide artifact-free spectra with a high signal-to-noise ratio. UV Raman cross-section and Raman excitation profiles are reported for gaseous O-2 (relative to N-2), aqueous CIO4-, tyrosine, phenylalanine, tryptophan, histidine, and hemoglobin excited between 193 nm and 210 nm to illustrate laser performance.

引用

页码：776 / 781

页数：6

共 36 条

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