Title :
Microscopic spectral imaging of defect centers in KDP
Author :
Demos, S.G. ; Yan, M. ; Staggs, M. ; Rasousky, H.B. ; De Yoreo, J.J.
Author_Institution :
Lawrence Livermore Nat. Lab., CA, USA
Abstract :
The presence of defect clusters in the bulk of large KH2PO4 (KDP) crystals is revealed using a spectral imaging technique and a microscopic optical system allowing for 1 micron spatial resolution. The observed particle concentration varies between 104-106 per mm3 depending on the crystal growth method and sector of the crystal. Exposure in high power 355 nm, 3 ns laser irradiation leads to a significant reduction of the number of observed defect centers
Keywords :
defect states; laser beam effects; nonlinear optics; optical images; optical materials; optical microscopy; potassium compounds; 3 ns; 355 nm; KDP; KH2PO4; crystal growth; defect centers; defect clusters; large KH2PO4 crystals; microscopic optical system; microscopic spectral imaging; ns laser irradiation; particle concentration; spatial resolution; spectral imaging technique; Argon; Charge coupled devices; Crystals; Laser beams; Lenses; Nonlinear optics; Optical imaging; Optical materials; Optical microscopy; Power lasers;
Conference_Titel :
Nonlinear Optics '98: Materials, Fundamentals and Applications Topical Meeting
Conference_Location :
Kauai, HI
Print_ISBN :
0-7803-4950-4
DOI :
10.1109/NLO.1998.710181
