Experimental study on a high conversion efficiency, low threshold, high-repetition-rate periodically poled lithium niobate optical parametric generator

Opt Express. 2006 Aug 7;14(16):7224-9. doi: 10.1364/oe.14.007224.

Abstract

A high-conversion-efficiency, low-threshold, quasi-continuous-wave optical parametric generator (OPG) based on a periodically poled lithium niobate (PPLN) crystal is presented. Pumped by an acousto-optically Q-switched 1064 nm Nd:YAG laser with a power output of 848 mW, the OPG generated an output power of 452 mW for the signal and the idle waves, achieving an internal conversion efficiency of 62.7% and a slope efficiency of 75.6%. To the best of our knowledge, this is the highest efficiency ever reported for single-pass, quasi-continuous-wave OPGs by using periodically poled crystals.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amplifiers, Electronic*
  • Computer Simulation
  • Equipment Design
  • Lasers*
  • Light
  • Models, Theoretical*
  • Niobium*
  • Oscillometry / instrumentation*
  • Oxides*

Substances

  • Oxides
  • Niobium
  • lithium niobate