Abstract
The combination band of ν2 + 2ν3 of CH4 at 1.33 μm (7512 cm−1) was observed at 0.3-cm−1 resolution by a simple experimental arrangement using a near-infrared high-radiant InGaAsP light emitting diode (LED) and a Ge detector. Forty-six line centers were measured with accuracies of 0.03 cm−1. The assignment of these manifolds was made by inspection of the P, Q, and R branches. The experimental result indicates that the ν2 + 2ν3 band can be used for fully optical remote monitoring of methane using InGaAsP optical sources in conjunction with an ultralow-loss optical fiber network.
© 1983 Optical Society of America
Full Article | PDF ArticleMore Like This
Kinpui Chan, Hiromasa Ito, and Humio Inaba
Appl. Opt. 23(19) 3415-3420 (1984)
V. Malathy Devi, D. Chris Benner, Mary Ann H. Smith, and Curtis P. Rinsland
Appl. Opt. 30(3) 287-304 (1991)
Shang-I Chou, Douglas S. Baer, and Ronald K. Hanson
Appl. Opt. 36(15) 3288-3293 (1997)