Intracavity wavelength modulation of an optical parametric oscillator for coherent Raman microscopy

被引:31
作者
Saar, Brian G. [1 ]
Holtom, Gary R. [1 ]
Freudiger, Christian W. [1 ,2 ]
Ackermann, Chrisita [3 ]
Hill, Winfield [4 ]
Xie, X. Sunney [1 ]
机构
[1] Harvard Univ, Dept Chem & Biol Chem, Cambridge, MA 02138 USA
[2] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
[3] Ackermann Associates, Saline, MI 48176 USA
[4] Harvard Univ, Rowland Inst Harvard, Cambridge, MA 02142 USA
来源
OPTICS EXPRESS | 2009年 / 17卷 / 15期
基金
美国国家科学基金会;
关键词
SPECTROSCOPY;
D O I
10.1364/OE.17.012532
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We present a novel intracavity frequency modulation scheme in a tunable, picosecond optical parametric oscillator (OPO). The OPO signal wavelength can be modulated with a depth of more than 10 nm at a rate of 38 MHz (one half its repetition rate). We discuss the design and construction of the light source and its application to the recently-developed frequency modulation coherent anti-Stokes Raman scattering (FM-CARS) and stimulated Raman scattering (SRS) techniques. The new light source allows for real time subtraction of the interfering background signal in coherent Raman imaging, yielding images with purely chemical contrast. (C) 2009 Optical Society of America
引用
收藏
页码:12532 / 12539
页数:8
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