Frequency stability measurements of 1.5 μm erbium lasers locked to acetylene absorption lines

Author

Svelto, Cesare ; Bava, Elio

Author_Institution

Dept. of Electron. & Inf., Politecnico di Milano, Italy

Volume

48

Issue

2

fYear

1999

fDate

4/1/1999 12:00:00 AM

Firstpage

537

Lastpage

539

Abstract

We report on the absolute frequency stabilization of Yb-Er:glass lasers against different acetylene absorption lines in the 1.5 μm spectral region. An external frequency modulation technique was adopted to independently stabilize two diode-pumped erbium microlasers against the P(15) rovibrational line at 1534.099 nm. A long-term frequency stability below 10^-9 (200 kHz) was measured on both the closed-loop error signal and on the beat note frequency. From the beat signal analysis, a 1 ms laser linewidth of 50 kHz was observed. The Allan standard deviation of the beat frequency was below 10^-10 for integration times between 10 ms and 1 s and as low as 4×10^-11 around 0.1 s

Keywords

erbium; laser frequency stability; organic compounds; solid lasers; 1.5 micron; Allan variance; Yb-Er:glass laser; acetylene absorption line; beat signal; closed loop error signal; diode pumped erbium microlaser; frequency locking; frequency modulation; frequency stability; integration time; linewidth; rovibrational line; Absorption; Erbium; Frequency measurement; Frequency modulation; Glass; Laser beams; Laser stability; Pump lasers; Semiconductor diodes; Solid lasers;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.769652

Filename

769652