Nanosecond pulsed single longitudinal mode diamond Raman laser in the 1.6â
µm spectral region.
Opt Lett
; 47(9): 2210-2213, 2022 May 01.
Article
em En
| MEDLINE
| ID: mdl-35486762
ABSTRACT
We demonstrate the first nanosecond pulsed single longitudinal mode (SLM) intracavity-pumped diamond Raman laser, to the best of our knowledge. The eye-safe coherent source at 1634â
nm, which was converted from the actively Q-switched 1342â
nm NdYVO4 laser, yielded 4.35 W of multimode average output power with a pulse duration of 6â
ns and peak power of 29â
kW. By exploiting the spatial hole burning free gain mechanism in the Raman media, stable SLM operation was observed at low output power (0.46 W) for the free-running case. Furthermore, by incorporating an etalon in the fundamental standing-wave cavity, the spectral linewidth of the fundamental field was suppressed substantially below the diamond Raman gain linewidth and slightly less than the free spectral range of the mm-scale Raman resonator. Thereby, a much higher SLM output power of 1.63 W was obtained with a pulse duration of â¼9â
ns and a spectral linewidth of â¼77â
MHz.
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MEDLINE
Idioma:
En
Revista:
Opt Lett
Ano de publicação:
2022
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Article