Frequency stabilization of 1.55 mu m DFB laser diode using vibrational-rotational absorption of /sup 13/C/sub 2/H/sub 2/ molecules

Author

Sudo, Shoichi ; Sakai, Yoshihisa ; Yasaki, H. ; Ikegami, Tetsumo

Author_Institution

NTT Opto-Electron. Lab., Kanagawa, Japan

Volume

1

Issue

11

fYear

1989

Firstpage

392

Lastpage

394

Abstract

The vibrational-rotational absorption of /sup 13/C/sub 2/H/sub 2/ molecules (VRAMs) in the 1.52-1.55 mu m region was investigated in detail. On the basis of this investigation, frequency stabilization of 1.55- mu m distributed-feedback (DFB) laser diodes was demonstrated. Frequency stability to within 2 MHz peak/peak fluctuation was achieved at the 1.54949- mu m wavelength. In addition, frequency stabilizations in the wavelength regions of 1.53 mu m and 1.54 mu m were also carried out by using the strong absorption lines of /sup 13/C/sub 2/H/sub 2/ VRAM in these wavelength regions. The spectral width of the frequency-stabilized DFB laser diode was found to be 25 MHz. The absolute frequency was found to be stabilized at least to within 25 MHz by the measurement of beat spectrum.<>

Keywords

distributed feedback lasers; infrared spectra of organic molecules and substances; laser frequency stability; molecular rotation-vibration; organic compounds; semiconductor junction lasers; spectral line breadth; 1.52 to 1.55 micron; 1.54949 micron; absolute frequency; acetylene molecules; acetylene-/sup 13/C; beat spectrum; distributed feedback laser diodes; frequency stabilization; spectral width; strong absorption lines; vibrational-rotational absorption; Absorption; Atomic beams; Atomic measurements; Diode lasers; Fluctuations; Frequency; Nonlinear optics; Optical harmonic generation; Stability; Wavelength measurement;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.43390

Filename

43390