A tunable diode-pumped Er-Yb:glass microlaser has been frequency locked to a grid of nine absorption lines of isotopic acetylene, (C2H2)-C-13, in the 1540-1551nm 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 50kHz. Time and spectral analysis of closed-loop error-signals for the different locking wavelengths are also reported.
Analysis of long-term absolute-frequency stabilisation of a bulk 1.5 mu m erbium microlaser to a grid of nine different wavelengths
SORBELLO, GINO;
1998-01-01
Abstract
A tunable diode-pumped Er-Yb:glass microlaser has been frequency locked to a grid of nine absorption lines of isotopic acetylene, (C2H2)-C-13, in the 1540-1551nm 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 50kHz. Time and spectral analysis of closed-loop error-signals for the different locking wavelengths are also reported.File in questo prodotto:
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