Passive Q-switching of an intracavity frequency doubled diode-pumped Nd:YVO4/KTP green laser with Cr4+: YAG

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A compact diode-pumped green-pulse laser has been demonstrated by using Cr4+:YAG as a saturable absorber in a simple cavity formed by a coated Nd:YVO4 crystal and a coated KTP crystal. When continuous-wave (CW) pumped with a fiber-coupled laser diode, the laser produces green pulses of 20-35-ns duration at 532 nm, with a repetition rate of 15-70 kHz. The highest green peak power was 80.8 W, obtained at 1.2 W of pump power, which is 320 times enhancement in comparison to a green output power of 250 mW under CW.

Original languageEnglish
Pages (from-to)1481-1483
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number11
StatePublished - 1 Nov 1997


  • Cr:YAG
  • Fiber- coupled diode
  • Green-pulse laser
  • Passive Q-switch

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