Near-infrared wafer-fused vertical-cavity surface-emitting lasers for HF detection

作者：Civis Svatopluk^*; Zelinger Zdenek; Nevrly Vaclav; Dorogan Andrei; Ferus Martin; Iakovlev Vladimir; Sirbu Alexei; Mereuta Alexandru; Caliman Andrei; Suruceanu Grigore; Kapon Eli

来源：Journal of Quantitative Spectroscopy and Radiative Transfer, 2014, 147: 53-59.

DOI：10.1016/j.jqsrt.2014.05.010

• High resolution absorption spectroscopy
• Monitoring of hydrogen fluoride, methane, and ammonia
• Vertical Cavity Surface Emitting Laser (VCSEL)
• Tunable diode laser spectroscopy (TDLS)

1310 nm Wavelength VCSELs produce single mode emission in excess of 1 mW in the temperature range of 20-70 degrees C with a very low relative intensity noise of -148 dB/Hz. These devices have a broad tuning range of similar to 50 cm(-1) with variable temperature and current, which cover multiple absorption lines of methane, ammonia and hydrogen fluoride. With these VCSELs, we report optical absorption spectroscopy of several gases near 1310 nm wavelength. In particular, we report for the first time detection of HF using the absorption line in the vicinity of 7568 cm(-1) with an estimated low-pressure detection limit at the level of several ppm.

• 出版日期2014-11