Development of a Compact Instrument using Fiber Laser based Difference-Frequency Generation Source for Chemical Gas Detection

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Development of a Compact Instrument using Fiber Laser based Difference-Frequency Generation Source for Chemical Gas Detection

Cousin, Julien / Chen, Weidong / Boucher, Daniel / Kassi, Samir / Romanini, Daniele / Zeninari, Virginie / Parvitte, Bertrand / Courtois, Daniel

Abstract

We describe the development of a compact instrument for trace gas detection of chemical species. The instrument, operating in the mid-infrared (3.16-3.41 ¿m), is based on continuous-wave fiber laser pumped difference-frequency generation in a PPLN crystal. Development and application of this novel laser instrument to spectroscopic sensing of chemical trace gas will be presented. During the last decade, the need for optical telecommunication has spurred the development of continuous-wave (CW) tunable lasers in the near infrared (NIR) around 1.55 ¿m. The narrow linewidth, wide spectral coverage and wavelength tunability, high single mode output power and excellent beam quality in conjunction with room temperature operation and optical fiber pigtailed coupling make this type of telecom laser a very attractive source of choice for use as a suitable pump source in difference-frequency generation (DFG) in the mid-infrared (MIR) [1]. The mid-infrared spectral region is usually highly attractive for ultra-sensitive trace gas spectroscopy, owing to the strong absorptions of fundamental bands/modes. In this paper, we describe the development of a MIR laser source for trace gas detection of chemical species. The laser source, emitting between 3.16 and 3.41 ¿m, is based on continuous-wave difference-frequency generation in a periodically poled LiNbO3 (PPLN) crystal. Two CW fiber lasers were used as difference-frequency mixing source: one is an ytterbium (Yb3+) doped fiber laser (YDFL, IPG LASER GmbH) operating at 1062 nm, and the other is an erbium (Er3+) doped fiber laser (EDFL, IPG LASER GmbH).

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Dokumentinformationen

Titel :

Development of a Compact Instrument using Fiber Laser based Difference-Frequency Generation Source for Chemical Gas Detection

Beteiligte:

Cousin, Julien (Autor:in) / Chen, Weidong (Autor:in) / Boucher, Daniel (Autor:in) / Kassi, Samir (Autor:in) / Romanini, Daniele (Autor:in) / Zeninari, Virginie (Autor:in) / Parvitte, Bertrand (Autor:in) / Courtois, Daniel (Autor:in)

Erschienen in:

2006 Joint 31st International Conference on Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics ; 582

Erscheinungsdatum :

2006-09-01

Format / Umfang :

1188814 byte

ISBN :

1-4244-0400-2 , 1-4244-0399-5

DOI :

https://doi.org/10.1109/ICIMW.2006.368789

Medientyp :

Aufsatz (Konferenz)