Browsing by Author "I.F.Chang"

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The Inexpensive Repetitively Pulsed CO2 Laser
(交大學刊編輯委員會, 1975-07)
黃廣志
;
李大為
;
張一蕃
;
K.C.Huang
;
David Lee
Experiments were performed to obtain inexpensive construction of repetitively pulsed CO2 lasers. A 2.2 cm bore,150 cm discharge tube containing CO2 and N2 gas mixture was operated at 24 KV to produce output in excess of 0.1 joule. The output was approximately doubled when He gas was used along with CO2,N2 gases. At maximum output energy the ratio of electric field to pressure was approximately 20 V/cm torr. Good control of discharge and high circuit efficiency was obtained with a simple circuit operated at 30 or 60 pulses per second synchronized to the 60 Hz power line.
雷射全像術在秘密照相上之應用
(交大學刊編輯委員會, 1976-04)
黃廣志
;
張一蕃
;
王遵義
;
K.C.Huang
;
I.F.Chang
A rigorous theorem and gedanken experiment for the highly reliable optical modulated method for the confidential picture-taking technology is developed. Its reliability and possibility for realization is also presented in this paper.