Browsing by Author "Chen, CD"

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A heterodyne interferometer using an electro-optic modulator for measuring small displacements
(1996-01-01)
Su, DC
;
Chiu, MH
;
Chen, CD
;
交大名義發表
;
光電工程學系
In this heterodyne interferometer for measuring small displacements, an electro-optic modulator is used as a frequency shifter. It has some merits, such as, free from the mechanical vibration, simple and compact optical structure, and a general and inexpensive electrical signal processing circuit can be used without decreasing the measuring resolution and easily operated in real time.
Method for determining the fast axis and phase retardation of a wave plate
(1996-09-01)
Chiu, MH
;
Chen, CD
;
Su, DC
;
光電工程研究所
;
Institute of EO Enginerring
Based on the heterodyne interferometric technique and the discrimination technique of using two light beams with different wavelengths, a novel method for identifying the fast axis of a wave plate and evaluating its phase retardation is presented. Some of the merits of the method, such as, a simple optical setup, high stability, better resolution, and easier operation, are presented, and the validity of the method is demonstrated. (C) 1996 Optical Society of America.
Method for determining the fast axis and phase retardation of a wave plate
(1996-09-01)
Chiu, MH
;
Chen, CD
;
Su, DC
;
交大名義發表
;
光電工程學系
Based on the heterodyne interferometric technique and the discrimination technique of using two light beams with different wavelengths, a novel method for identifying the fast axis of a wave plate and evaluating its phase retardation is presented. Some of the merits of the method, such as, a simple optical setup, high stability, better resolution, and easier operation, are presented, and the validity of the method is demonstrated. (C) 1996 Optical Society of America.
Simple two-frequency laser
(1996-04-01)
Su, DC
;
Chiu, MH
;
Chen, CD
;
交大名義發表
;
光電工程學系
The optics of a simple two-frequency laser is presented. If consists of a laser, a half-wave plate, and an electro-optic modulator. Because of a simple on-axis optical setup, it has high stability easier operation, and high efficiency, without reducing the available coherence length of a laser and is suitable for two-frequency interferometry.