Title :
Analysis of long-term absolute-frequency stabilisation of a bulk 1.5 μm erbium microlaser to a grid of nine different wavelengths
Author :
Taccheo, S. ; Sorbello, G. ; Laporta, P. ; Svelto, C.
Author_Institution :
Dipt. di Fisica, CNR, Milano, Italy
fDate :
1/8/1998 12:00:00 AM
Abstract :
A tunable diode-pumped Er-Yb:glass microlaser has been frequency locked to a grid of nine absorption lines of isotopic acetylene, 13 C2H2, in the 1540-1551 nm wavelength range using a simple fringe-side-locking technique. Beat-note measurements between two identical lasers show sub-megahertz long-term stability over several hours and a short-term oscillator linewidth below 50 kHz. Time and spectral analysis of closed-loop error-signals for the different locking wavelengths are also reported
Keywords :
erbium; laser frequency stability; solid lasers; 1.5 micron; 1540 to 1551 nm; 13C2H2; absorption lines; beat note; bulk erbium microlaser; closed-loop error-signal; frequency locking; fringe-side-locking; isotopic acetylene; long-term absolute-frequency stabilisation; short-term oscillator linewidth; spectral analysis; time analysis; tunable diode-pumped Er-Yb:glass microlaser; wavelength grid;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19980120
