EFFECT OF THE VIBRATION-TRANSLATION TRANSFER RATE ON LASER-INDUCED FREQUENCY CHIRP IN A LONG-PULSE CO2-LASER

被引：2
|
作者：
CHOU, HP
WILLMAN, B
LEUNG, K
THEOPHANIS, G
HASSON, V
机构：
[1] Avco Research Laboratory, TEXTRON, Everett, MA 02149
来源：
APPLIED PHYSICS LETTERS | 1990年 / 56卷 / 21期
关键词：
D O I：
10.1063/1.102980
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A frequency sweeping (chirping) mechanism governed by the lasing gas pressure and composition has been observed in a long-pulse TE CO2 laser for the first time. The mechanism was detected in heterodyned data obtained from photomixing the pulsed laser output with a cw local oscillator. A theory has been developed which links this chirp-governing mechanism to the vibration-translation (V-T) transfer rate from the lower laser level to the ground state. This new theory extends the existing theories on chirp in pulsed CO2 lasers into the long-pulse regime.
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页码：2086 / 2088
页数：3
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