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A novel nonlinear frequency conversion process was demonstrated to realize the synchronized dual‐wavelength emissions at 1534 and 1572 nm by the mixed optical parametric oscillation (OPO) conversion in gray‐tracking‐resistance KTP (GTR‐KTP) and KTA crystals. Both the two crystals were inserted into the diode‐pumped Nd:YAG/Cr4+:YAG fundamental resonator, with their Y axes perpendicular to each other...
A simultaneous dual‐wavelength eye‐safe laser at around 1.9 and 1.7 μm based on only a single KTiOAsO4 (KTA) intracavity optical parametric oscillator (IOPO) is firstly reported. The dual‐wavelength‐IOPO is driven by an acoustooptic (AO) Q‐switched Nd:YAG laser, which is simultaneously oscillated at the radiations of 1.3 and 1.06 μm. Within the KTAIOPO cavity, the signal output waves of IOPO at the...
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