Title :
Frequency stabilisation of 1.5 mu m DFB laser using internal second harmonic generation and atomic 87Rb line
Author_Institution :
Tokyo Inst. of Technol., Kanagawa, Japan
Abstract :
Absorption spectral lines in 87Rb were measured by the internal second harmonic generated from a 1.56 mu m GaInAsP DFB laser. This second harmonic frequency was locked to the center of the 87Rb spectral line to stabilise the 1.56 mu m fundamental radiation frequency. The resultant frequency stability was 9.0*10-12 over the integration time of 100 s.
Keywords :
distributed feedback lasers; laser frequency stability; optical communication equipment; rubidium; semiconductor junction lasers; 1.56 micron; 100 s; 87Rb spectral line; DFB laser; GaInAsP; absorption spectral lines; internal second harmonic generation; laser frequency stabilisation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890016
