NO2 photometer based on solid-state light sources

被引：3

作者：

Fetzer, GJ

Miao, LS

Chilla, JLA

Pikal, JM

Menoni, CS

机构：

[1] Arete Associates, Tucson, AZ 85711 USA

[2] Colorado State Univ, Dept Elect Engn, Ft Collins, CO 80523 USA

[3] Colorado State Univ, Ctr Optoelect Comp Syst, Ft Collins, CO 80523 USA

[4] Coherent Inc, Santa Clara, CA 95054 USA

来源：

APPLIED OPTICS | 1998年 / 37卷 / 24期

关键词：

D O I：

10.1364/AO.37.005590

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A sensitive NO2 analyzer, that uses a commercial LED emitting near 450 nm, has been developed. The prototype can measure NO2 concentrations as low as 1 part in 10(9) as defined by the Environmental Protection Agency. The response time of the system is 1 min. In addition, a demonstration of the use of external-cavity frequency-doubled diode laser radiation to accomplish similar measurements is reported. However, because of low nonlinear optical conversion efficiencies, comparable detection limits were not possible. Nonetheless, frequency-doubled diode-laser wavelengths have the potential to reach farther into the UV than LED technology, allowing the detection and measurement of numerous other gaseous species of interest. (C) 1998 Optical Society of America.

引用

页码：5590 / 5595

页数：6

共 23 条

[1]

[Anonymous], 1986, ENV POL SUS DEV

[2] SIMULTANEOUS ABSOLUTE MEASUREMENTS OF GASEOUS NITROGEN SPECIES IN URBAN AMBIENT AIR BY LONG PATHLENGTH INFRARED AND ULTRAVIOLET VISIBLE SPECTROSCOPY [J].