Narrow-linewidth middle-infrared ZnGeP2 optical parametric oscillator
نویسندگان
چکیده
We report a narrow-linewidth ZnGeP2 (ZGP) optical parametric oscillator (OPO). It employs a Q-switched Nd:YAG-laser-pumped LiNbO3 OPO with an output at l 5 2.55 mm that is used as a pump for the ZGP OPO. With the singly resonant type II ZGP OPO cavity containing a diffraction grating and a Si etalon, we achieved mid-IR tunability from 3.7 to 8 mm with an output linewidth of ;0.1 cm21, corresponding to ;3 axial cavity modes. We have also demonstrated that such a narrow-linewidth OPO can be achieved with a fairly broadband (;15 cm21) pump. © 2001 Optical Society of America OCIS codes: 190.0190, 190.4970, 140.3070.
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تاریخ انتشار 2001