Studies of saturated absorption and measurements of optical frequency for lines in the ν1 + ν3 and ν1+2ν4 bands of ammonia at 1.5 μm

被引：18

作者：

Czajkowski, A. ^{[1
]}

Alcock, A. J. ^{[2
]}

Bernard, J. E. ^{[3
]}

Madej, A. A. ^{[3
]}

Corrigan, M. ^{[1
]}

Chepurov, S. ^{[4
]}

机构：

[1] Univ Ottawa, Dept Phys, Ottawa, ON K1N 6N5, Canada

[2] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada

[3] Natl Res Council Canada, Inst Natl Measurement Stand, Ottawa, ON K1A 0R6, Canada

[4] Russian Acad Sci, Inst Laser Phys, Siberian Branch, Novosibirsk 630090, Russia

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 11期

基金：

加拿大自然科学与工程研究理事会;

关键词：

LASER; SPECTRUM; AMMONIA; CAVITY; (C2H2)-C-13; 1.5-MU-M; BANDS; STABILIZATION; SPECTROSCOPY; TRANSITIONS;

D O I：

10.1364/OE.17.009258

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A cavity-enhanced absorption spectrometer was used to saturate several lines of ammonia in the 1510 nm - 1560 nm region. Analysis of power broadening of the saturated absorption feature for one of the ammonia lines yielded a dipole moment value comparable to that of the lines in the nu(1)+nu(3) band in acetylene. Highly reproducible frequency measurements of four ammonia line centres were carried out using a frequency comb generated by a mode-locked Cr4+:YAG laser. These results demonstrate the possible application of ammonia saturated absorption lines for frequency metrology and calibration in a spectral region lacking strong absorbers. To our knowledge, this is the first frequency measurement of saturated absorption lines in ammonia at near infrared frequencies and the first reported observation of saturated absorption lines in the nu(1)+2 nu(4) band. (C) 2009 Optical Society of America

引用

页码：9258 / 9269

页数：12

共 33 条

[1] Ultrashort pulse Cr4+:YAG laser for high precision infrared frequency interval measurements [J].