A narrow-linewidth optical parametric oscillator for mid-infrared high-resolution spectroscopy
Academic Article
Publication Date:
2012
abstract:
We present a narrow-linewidth, singly-resonant cw optical parametric oscillator, emitting more than 1 W in the 2.7-4.2 mu m range. The OPO is pumped by a narrow linewidth (40 kHz) fibre-laser system and the signal frequency is locked to a high-finesse Fabry-Perot cavity in order to increase the spectral resolution, thus obtaining a residual linewidth of 70 kHz for the signal. We tested the spectral performance of our OPO on several transitions in the nu(1) rovibrational band of CH3I, measuring line intensities and showing sub-Doppler dip detection.
Iris type:
01.01 Articolo in rivista
Keywords:
optical parametric oscillator; frequency stabilization; sub-Doppler spectroscopy
List of contributors:
DE NATALE, Paolo; DE ROSA, Maurizio; Maddaloni, Pasquale; Rocco, Alessandra; Ricciardi, Iolanda; DE TOMMASI, Edoardo
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