학술논문
Two-beam noncollinear Makers fringe technique
Document Type
Conference
Author
Source
Conference Digest. 2000 Conference on Lasers and Electro-Optics Europe (Cat. No.00TH8505) Laser and electro-optics Europe Lasers and Electro-Optics Europe, 2000. Conference Digest. 2000 Conference on. :1 pp. 2000
Subject
Language
Abstract
Summary form only given. One of the most relevant quantities in understanding the poling process is the nonlinear depth (h) which is usually measured using the Makers fringe technique (MFT). We propose a two-noncollinear beam MFT that can measure nonlinear depths down to 2 /spl mu/m with sub-/spl mu/m resolution in glass and can be readily applied to second-order nonlinear films made of any other material. During the nonlinear interaction a second harmonic field is produced. We were able to determine the nonlinear depths as 4.8 /spl mu/m and 8 /spl mu/m respectively. It is worth noting that the classical one-beam MFT gives two identical curves for such nonlinear-depth values and that our results are m excellent agreement with those obtained elsewhere with chemical etching.