Compact gas sensor using a pulsed difference-frequency laser spectrometer

被引:13
作者
Seiter, M [1 ]
Sigrist, MW [1 ]
机构
[1] ETH Zurich, Inst Quantum Elect, CH-8093 Zurich, Switzerland
关键词
D O I
10.1364/OL.24.000110
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We present a novel compact pulsed laser spectrometer based on difference-frequency mixing of a cw tunable external-cavity diode laser (795-825 nm) and a pulsed Nd:YAG laser (1064 nm) in bulk LiNbO3. The pulsed mid-IR source is continuously tunable from 3.16 to 3.67 mu m and exhibits a linewidth of only 154 MHz, a peak power of approximate to 50 mu W, and a pulse duration of 6 ns at a 6.5-kHz repetition rate. Spectra of methane in room air and formaldehyde have been recorded at room-temperature operation in a multipass cell with deduced detection limits of 10 and 40 parts in 10(9), respectively. (C) 1999 Optical Society of America.
引用
收藏
页码:110 / 112
页数:3
相关论文
共 8 条
[1]   A LASER INFRARED SOURCE OF NANOSECOND PULSES TUNABLE FROM 1.4 TO 22 MU-M [J].
BETHUNE, DS ;
LUNTZ, AC .
APPLIED PHYSICS B-PHOTOPHYSICS AND LASER CHEMISTRY, 1986, 40 (02) :107-113
[2]   Passively Q-switched Nd:YAG ring lasers with high average output power in single-frequency operation [J].
Freitag, I ;
Tunnermann, A ;
Welling, H .
OPTICS LETTERS, 1997, 22 (10) :706-708
[3]   VERY NARROW-BANDWIDTH TUNABLE INFRARED DIFFERENCE FREQUENCY GENERATION WITH INJECTION-LOCKED DYE-LASERS [J].
MUTIN, P ;
BOQUILLON, JP .
APPLIED PHYSICS B-PHOTOPHYSICS AND LASER CHEMISTRY, 1989, 48 (05) :411-416
[4]   Compact laser difference-frequency spectrometer for multicomponent trace gas detection [J].
Petrov, KP ;
Curl, RF ;
Tittel, FK .
APPLIED PHYSICS B-LASERS AND OPTICS, 1998, 66 (05) :531-538
[5]   DOPPLER-LIMITED MOLECULAR SPECTROSCOPY BY DIFFERENCE-FREQUENCY MIXING [J].
PINE, AS .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1974, 64 (12) :1683-1690
[6]   THE HITRAN MOLECULAR DATABASE - EDITIONS OF 1991 AND 1992 [J].
ROTHMAN, LS ;
GAMACHE, RR ;
TIPPING, RH ;
RINSLAND, CP ;
SMITH, MAH ;
BENNER, DC ;
DEVI, VM ;
FLAUD, JM ;
CAMYPEYRET, C ;
PERRIN, A ;
GOLDMAN, A ;
MASSIE, ST ;
BROWN, LR ;
TOTH, RA .
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, 1992, 48 (5-6) :469-507
[7]   Broadly tunable difference-frequency spectrometer for trace gas detection with noncollinear critical phase-matching in LiNbO3 [J].
Seiter, M ;
Keller, D ;
Sigrist, MW .
APPLIED PHYSICS B-LASERS AND OPTICS, 1998, 67 (03) :351-356
[8]   A cw AgGaS2 difference frequency spectrometer with diode lasers as pump sources [J].
Sumpf, B ;
Kelz, T ;
Nagele, M ;
Kronfeldt, HD .
APPLIED PHYSICS B-LASERS AND OPTICS, 1997, 64 (05) :521-524