Title :
Demonstration of saturation spectra of caesium D2line with a low linewidth distributed feedback laser diode
Author :
Ligeret, V. ; Holleville, D. ; Perrin, S. ; Bansropun, S. ; Lecomte, M. ; Parillaud, O. ; Calligaro, M. ; Krakowski, M. ; Dimarcq, N.
Abstract :
Low linewidths for Al-free active region distributed feedback lasers using a self-heterodyne measurement method (minimum beat width of 0.8 MHz at 20 mW and 12 C, 1.2 MHz at 852.12 nm 35 mW and 36 C) are demonstrated. Singlemode emission was achieved at 852.12 nm corresponding to the D2 caesium transition, with an optical output power of 35 mW at 140 mA under CW operation. Finally, the saturation spectra of caesium atoms with the DFB laser diode was recorded with a resolution close to the natural linewidth.
Keywords :
atom optics; caesium; distributed feedback lasers; optical saturation; semiconductor lasers; spectral line breadth; CW laser; Cs; DFB laser diode; caesium atom D2 transition line; current 140 mA; frequency 0.8 MHz; frequency 1.2 MHz; low linewidth distributed feedback laser diode; power 20 mW; power 35 mW; saturation spectra; self-heterodyne measurement method; singlemode emission; temperature 12 degC; temperature 36 degC; wavelength 852.12 nm;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20080059
