We have designed and tested a broadband fan-out PPLN-based optical parametric oscillator (OPO) pumped by a Q-switched Nd:YAG laser (1.064 mm) and operating in the spectral range 2.6 - 4.2 mm. The optical scheme of the OPO utilises a cylindrical pump beam expander for increasing the effective aperture of the PPLN structure and obtaining broadband generation.
- MgO:PPLN crystal
- Optical parametric oscillator
- optical parametric oscillator
- MgO : PPLN crystal