A compact small-scale intracavity optical parametric oscillator (IOPO) at 1.57 μm, driven by a diode pumped Nd:YVO 4 /Cr:YAG passively Q-switched laser, is experimentally presented. By optimizing the mode matching, low threshold (0.66 W) and high repetition rate (21 kHz) operation of the IOPO has been investigated. At the incident diode pump power of 1.56 W, the miniature (56 mm long) IOPO produces a signal average output power up to 86 mW. Efficient parametric conversion leads to short duration (1.8 ns) pulses and high peak power output (2.3 kW) at 1.57 μm. Moreover, near diffraction limited and Gaussian type signal beam profile is also observed.
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Miao et al. (2010) studied this question.
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