Abstract
We show that thermo-optical effects can lead to periodical mode hopping in cw optical parametric oscillators(OPO): we have observed thermally induced oscillations at few kHz between two different longitudinal modes in type-II OPOs both in doubly or triply resonant configurations (DRO or TRO). At high pump power, this instability occurs on wide ranges of detunings, thus severely affecting tunability.
© 2001 EPS
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