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Impurity contamination in fast grown KDP

Conference ·
OSTI ID:552046
; ; ;  [1]
  1. Lawrence Livremore National Lab., CA (United States)
Potassium dihydrogen phosphate (KDP) has traditionally been used as a nonlinear optical material for frequency conversion to produce second and third harmonic radiation. A high laser-induced damage threshold for KDP crystals is required for high power laser applications, such as laser fusion. High quality KDP crystals for such applications can be produced by a recently developed rapid crystal growth method. The authors report the results of an impurity contamination study in rapidly-grown KDP crystals. Using absorption spectroscopy, they identified the impurity contamination in the different growth sectors of the crystals. They show that the level of contamination depends on the growth rate achieved during the rapid growth. The impurities observed by absorption spectroscopy are identified as the origin of lattice distortion and optical birefringence in the KDP crystals. The study of impurity incorporation during crystal growth is important for understanding the damage mechanism of KDP.
Research Organization:
International Society for Optical Engineering, Washington, DC (United States)
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
552046
Report Number(s):
CONF-9510106--Vol.2714
Country of Publication:
United States
Language:
English