Frequency conversion in novel materials and its application to high resolution gas sensing

被引：11

作者：

Arie, A ^{[1
]}

Fradkin-Kashi, K ^{[1
]}

Shreberk, Y ^{[1
]}

机构：

[1] Tel Aviv Univ, Fac Engn, Dept Elect Engn, IL-69978 Tel Aviv, Israel

来源：

OPTICS AND LASERS IN ENGINEERING | 2002年 / 37卷 / 2-3期

关键词：

optical sensor; laser;

D O I：

10.1016/S0143-8166(01)00093-8

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have constructed a compact room-temperature mid-infrared spectrometer and gas sensor, based on quasi-phase matched difference-frequency generation in periodically poled ferroelectric crystals of the KTiOPO4 family, namely: KTiOPO4, KTiOASO(4) and RbTiOAsO4. The wide tunabilty of the spectrometer (3.1-3.75 mum) enables us to cover an entire vibrational band of gases such as methane and nitrous oxide. The high spectral resolution (similar to1 MHz) is used to investigate the spectral profile of the hyperfine components of a single rotational transition. The sensitivity of the described spectrometer is similar to75 parts per million. Applications of this technology include the detection of polluting or toxic gases, biomedical sensing, atmospheric research, volcanic monitoring and industrial process control. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：159 / 170

页数：12

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