Title :
A 1.5 mu m absolutely stabilized extended-cavity semiconductor laser
Author :
de Labachelerie, M. ; Diomande, K. ; Kemssu, P. ; Latrasse, C. ; Cerez, P.
Author_Institution :
Lab. de l´´Horloge Atomique, CNRS, Orsay, France
Abstract :
Summary form only given. A compact source (2-L volume) with a stable extended-cavity laser set at 1514 nm but electrically tunable over 0.3 nm using a PZT has been designed and operated as an optical reference frequency. The package also includes an NH/sub 3/ absorption cell providing several strong absorption lines, which are used to frequency-lock the laser on the side of the lines using a static loop in order to avoid residual laser frequency modulation. The frequency stability has been tested using an heterodyne beat between two identical sources. and a 10/sup -10/ relative frequency stability has been measured on a 100-s observation time. For longer observation times, some drifts unavoidable with such a stabilization method are observed: however, it has been shown that the laser frequency could stay in a +or-2-MHz range for several days, which is enough for system requirements.<>
Keywords :
frequency measurement; laser frequency stability; measurement standards; semiconductor junction lasers; 1514 nm; NH/sub 3/ absorption cell; PZT; PbZrO3TiO3; absolutely stabilized extended-cavity semiconductor laser; drifts; frequency stability; heterodyne beat; optical communication; optical reference frequency; residual laser frequency modulation; stable extended-cavity laser set; static loop; Absorption; Frequency modulation; Laser stability; Optical design; Optical mixing; Optical modulation; Semiconductor device packaging; Semiconductor lasers; Testing; Tunable circuits and devices;
Conference_Titel :
Precision Electromagnetic Measurements, 1990. CPEM '90 Digest., Conference on
Conference_Location :
Ottawa, Ontario, Canada
DOI :
10.1109/CPEM.1990.109941
