Tunable midinfrared source by difference frequency generation in bulk periodically poled KTiOPO4
نویسندگان
چکیده
We demonstrate quasi-phase-matched difference frequency generation in periodically poled KTiOPO4. A midinfrared ~3.2–3.4 mm! idler with a power level of 0.17 mW is generated by mixing a Nd:YAG laser and tunable external cavity laser near 1550 nm which is amplified by an erbium-doped fiber amplifier. The wavelength, temperature, and angle tuning characteristics of this device are determined. The experimental results are used to derive a Sellmeier equation with improved accuracy in the midinfrared range for the extraordinary refractive index of flux-grown KTiOPO4. © 1999 American Institute of Physics. @S0003-6951~99!04007-3#
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تاریخ انتشار 1999