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Proceedings Article

Tandem PPKTP and ZGP OPO for mid-infrared generation

[+] Author Affiliations
Markus Henriksson

Swedish Defence Research Agency (Sweden) and Royal Institute of Technology (Sweden)

Lars Sjöqvist

Swedish Defence Research Agency (Sweden)

Gustav Strömqvist, Valdas Pasiskevicius, Fredrik Laurell

Royal Institute of Technology (Sweden)

Proc. SPIE 7115, Technologies for Optical Countermeasures V, 71150O (October 02, 2008); doi:10.1117/12.799148
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From Conference Volume 7115

  • Technologies for Optical Countermeasures V
  • David H. Titterton; Mark A. Richardson
  • Cardiff, Wales, United Kingdom | September 15, 2008

abstract

Efficient laser sources in the 3 - 5 μm wavelength range are needed for directed infrared countermeasures, but also have applications in remote-sensing, medicine and spectroscopy. We present new results on our tandem optical parametric oscillator (OPO) scheme for converting the radiation from a 1.06 μm Nd3+-laser to the mid-infrared. Multi Watt level output power in the 3-5 μm range at 20 kHz pulse repetition frequency is reported. Our setup uses a type I quasi phase-matched PPKTP crystal in a near degenerate OPO to generate 2.13 μm radiation. A volume Bragg grating resonant close to, but not exactly at the degenerate wavelength, is used as a cavity mirror to reduce the bandwidth and ensure singly resonant operation. Both signal and idler from the PPKTP OPO are used to pump a ZGP OPO generating high power radiation in the 3-5 μm region. Using this scheme for each pump photon it is possible to generate four photons for each pump photon, all in the interesting wavelength range, thus enabling high efficiency conversion.

© (2008) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Markus Henriksson ; Lars Sjöqvist ; Gustav Strömqvist ; Valdas Pasiskevicius and Fredrik Laurell
"Tandem PPKTP and ZGP OPO for mid-infrared generation", Proc. SPIE 7115, Technologies for Optical Countermeasures V, 71150O (October 02, 2008); doi:10.1117/12.799148; http://dx.doi.org/10.1117/12.799148


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