Title :
Laser Spectrosscopy of Hydrogen Iodide molecule at 1.54 μm
Author :
Svelto, C. ; Galzerano, G. ; Norgia, M. ; Bava, E.
Author_Institution :
Dipt. di Elettronica e Informazione, Politecnico di Milano
Abstract :
Laser spectroscopy measurements of HI molecule at 1.54 mum wavelength were achieved by means of an external-cavity laser diode and by using both direct and FM measurements techniques. Line broadening was investigated for HI transitions at different gas pressures and the first measurements of the corresponding pressure broadening coefficients were performed. In particular, the Voigt absorption profiles for the R(3) transition at 1541.06 nm were finely retrieved by FM spectroscopy and numerical integration of the 1st derivative signals
Keywords :
measurement by laser beam; semiconductor lasers; spectral line breadth; spectroscopy; 1541.06 nm; FM spectroscopy; R(3) transition; Voigt absorption profiles; direct measurement techniques; external-cavity laser diode; hydrogen iodide molecule; laser spectroscopy; optical measurements; Absorption; Diode lasers; Gas lasers; Hydrogen; Laser transitions; Measurement techniques; Performance evaluation; Pressure measurement; Spectroscopy; Wavelength measurement; frequency standards; laser; optical measuremtns; optical metrology; spectroscopy;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2005. IMTC 2005. Proceedings of the IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-8879-8
DOI :
10.1109/IMTC.2005.1604411
