Abstract
AbstractCompact 589 nm yellow source was reported and generated from intracavity frequency‐doubling of c‐cut YVO4/Nd:YVO4/YVO4 Raman laser. A Cr4+:YAG/YAG composite was adopted for compact passively Q‐switching operation. Double‐end composited Nd:YVO4 crystal was designed to reduce the thermal effect and increase Raman crystal length. Both noncritical phase‐matching (NCPM) LBO crystal and critical phase‐matching (CPM) BBO crystal were used as frequency doubling crystal for comparison. 780 mW output power of 589 nm yellow emission was achieved with an incident pump power of 16 W. The pulse repetition frequency and pulse width were 41 kHz and 3.6 ns at the maximum output power, respectively. The results show passively Q‐switched operation provides a compact method to obtain 589 nm yellow emission.
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