Ppb-level H2S detection for SF6 decomposition based on a fiber-amplified telecommunication diode laser and a background-gas-induced high-Q photoacoustic cell | Zendy

Xukun Yin | Zendy; Lei Dong | Zendy; Hongpeng Wu | Zendy; Weiguang Ma | Zendy; Lei Zhang | Zendy; Wangbao Yin | Zendy; Liantuan Xiao | Zendy; Suotang Jia | Zendy; Frank K. Tittel | Zendy

Open Access

Ppb-level H2S detection for SF6 decomposition based on a fiber-amplified telecommunication diode laser and a background-gas-induced high-Q photoacoustic cell

Author(s) -

Xukun Yin,

Lei Dong,

Hongpeng Wu,

Weiguang Ma,

Lei Zhang,

Wangbao Yin,

Liantuan Xiao,

Suotang Jia,

Frank K. Tittel

Publication year - 2017

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4987008

Subject(s) - laser , gas laser , sulfur hexafluoride , diode , materials science , optics , detection limit , attenuation coefficient , resonator , optoelectronics , analytical chemistry (journal) , chemistry , physics , organic chemistry , chromatography

A ppb-level hydrogen sulfide (H2S) gas sensor for sulfur hexafluoride (SF6) decomposition analysis was developed by means of a background-gas-induced high-Q differential photoacoustic cell (PAC) and a fiber-amplified telecommunication diode laser. The watt-level excitation laser power compensates the sensitivity loss as a result of using a low cost, near-IR laser source. The differential design with a large cylindrical resonator diameter allows the PAC to accommodate the high power beam and maintain a low noise level output. The theory of background-gas-induced high-Q PAC is provided and was verified experimentally. A H2S detection limit (1σ) of 109 ppb in a SF6 buffer gas was achieved for an averaging time of 1 s, which corresponds to a normalized noise equivalent absorption coefficient of 2.9 × 10−9 cm−1 W Hz−1/2

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research