Efficient diode pumped Nd:KGW laser grown by top nucleated floating crystal method: Part II

Y. Kalisky, L. Kravchik, G. Boulon, G. Metrat, A. Brenier, M. R. Kokta

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations


Diode pumping of a laser-stress-free, Nd(5% at.):KGW, grown by top nucleated floating crystal (TNFC) method, is presented. The diode-pumped laser was operated both in the free-running and passively Q-switched operating modes. Under optimized conditions of resonator and optics, the Nd:KGW disk (1.3 mm in thickness), produced at room temperature an efficient free-running, TEM 00 output with maximum power of 0.4-W, with 75 % slope efficiency and 51 % total laser efficiency. Under slightly different experimental conditions the laser was passively Q-switched by using Cr4+:YAG as saturable absorber. The passively Q-switched laser produced modulated pulses at average frequencies in the range of 10-20 kHz, with pulsewidth of ≈180 nsec, with an average output power obtained was 30 mW at the maximumpumping power level. The results presented here indicate the potential Nd:KGW crystals grown by TNFC growth method, as candidates for concentrated, stress free diode pumped microlasers in a large variety of wavelengths, including the eye-safe range.

Original languageEnglish
Pages (from-to)28-35
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 13 Sep 2004
Externally publishedYes
EventSolid State Lasers XIII: Technology and Devices - San Jose, CA, United States
Duration: 27 Jan 200429 Jan 2004


  • Diode pumped lasers
  • Nd:KGW
  • Passive Q-switching

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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