Lasers, Fiber Optics, and Communications

Tuning characteristics of femtosecond optical parametric oscillator with broadband chirped mirrors

[+] Author Affiliations
Karolina Stankevičiūtė, Mikas Vengris, Rimantas Grigonis, Valdas Sirutkaitis

Vilnius University, Laser Research Center, Department of Quantum Electronics, Sauletelio Avenue 10, Vilnius LT-10223, Lithuania

Simas Melnikas, Simonas Kičas

Center for Physical Sciences and Technology, Savanoriu Avenue 231, Vilnius LT-02300, Lithuania

Opt. Eng. 54(12), 126111 (Dec 22, 2015). doi:10.1117/1.OE.54.12.126111
History: Received October 8, 2015; Accepted November 23, 2015
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Abstract.  We present the investigation of a synchronously pumped optical parametric oscillator (SPOPO) based on beta barium borate (BBO) nonlinear crystal with broadband complementary chirped mirror pairs (CMPs). Three SPOPO cavity configurations with slightly different intracavity dispersion were explored. Dispersion properties of cavity mirrors were characterized using a white light interferometer and found to be the key factor determining the gap-free tuning range as well as simultaneous multiwavelength generation. The SPOPO is pumped by the second harmonic of a Yb:KGW oscillator and provides signal pulses tunable over a spectral range from 625 to 980 nm. Signal pulse duration ranges from 102 to 268 fs in various intracavity dispersion regimes. In addition, signal beam power in excess of 500 mW is demonstrated, corresponding to 27% conversion efficiency from pump to signal wave.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Karolina Stankevičiūtė ; Mikas Vengris ; Simas Melnikas ; Simonas Kičas ; Rimantas Grigonis, et al.
"Tuning characteristics of femtosecond optical parametric oscillator with broadband chirped mirrors", Opt. Eng. 54(12), 126111 (Dec 22, 2015). ; http://dx.doi.org/10.1117/1.OE.54.12.126111


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