Title :
A reproducible method for growing nonlinear optical organic crystals (DAST) and excimer laser processing of DAST
Author :
Young-mok Son ; Ohsaki, N. ; Ito, H.
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
Abstract :
Summary form only given. The organic nonlinear optical crystal DAST (4-dimethylamino-N-methyl-4-stilbazolium tosylate) has higher nonlinearities (such as the electro-optical and second-order nonlinear optical coefficients) than other similar crystals. This has sparked significant efforts to develop a crystal growth processing method and to use DAST in various optical devices. We investigated a reproducible crystal growth method that monitors the conductivity of the concentration of a saturated DAST solution. We also developed a processing method using KrF excimer laser ablation.
Keywords :
crystal growth from solution; laser ablation; laser beam etching; optical fabrication; optical harmonic generation; optical materials; organic compounds; 4-dimethylamino-N-methyl-4-stilbazolium tosylate; DAST organic nonlinear optical crystal; etched depth; etching behavior; excimer laser ablation; flexible patterning; high quality crystals; relatively large crystal; reproducible crystal growth method; second harmonic generation; uniform concentration; Conductivity; Crystals; Etching; Laser ablation; Laser beam cutting; Methanol; Nonlinear optics; Optical films; Optical saturation; Temperature;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO '01. Technical Digest. Summaries of papers presented at the Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-662-1
DOI :
10.1109/CLEO.2001.947461
