Title :
Linewidth measurement of high power diode laser at 2 μm for carbon dioxide detection
Author :
Ksendzov, A. ; Forouhar, S. ; Briggs, R.M. ; Frez, C. ; Franz, K.J. ; Bagheri, Mehdi
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
The linewidth of a gallium antimonide-based laterally-coupled 2.05 m DFB laser emitting 40 mW of power at 9 C is measured. The measured linewidth is 1.7 MHz for 500 ms and 1.4 MHz for 10 ms observation time, respectively. The combination of high power and low frequency jitter makes this laser useful for detecting CO2 in air in both in-situ and remote sensing applications. The linewidth measurement is also discussed.
Keywords :
atmospheric chemistry; atmospheric composition; atmospheric techniques; carbon compounds; remote sensing by laser beam; semiconductor lasers; spectral line breadth; CO2; CO2 detection; carbon dioxide detection; frequency 1.4 MHz; frequency 1.7 MHz; gallium antimonide-based laterally-coupled DFB laser; high power diode laser; linewidth measurement; low frequency jitter; power 40 mW; remote sensing application; temperature 9 C; time 10 ms; time 500 ms; wavelength 2.05 mum;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2012.0363
