Tuning and stability of a singly resonant continous-wave optical parametric oscillator close to degeneracy

Markku Vainio (Corresponding Author), Cécile Ozanam, Ville Ulvila, Lauri Halonen

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Wavelength tuning and stability characteristics of a singly resonant continuous-wave optical parametric oscillator (cw OPO) in the proximity of signal-idler degeneracy have been studied. The OPO is made singly resonant by using a Bragg grating as a spectral filter in the OPO cavity. The signal-idler frequency difference can be tuned from 0.5 to 7 THz, which makes the OPO suitable for cw THz generation by optical heterodyning. The operation of the OPO within this singly-resonant regime is characterized by a strong self-stabilization effect. A gradual transition to an unstable, doubly-resonant regime is observed for a signal-idler detuning smaller than ~0.5 THz.
Original languageEnglish
Pages (from-to)22515-22527
JournalOptics Express
Issue number23
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed


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