Continuously variable distortion‐free attenuation of high‐power transversely excited atmospheric CO2laser pulses
作者:
P. Sakthivel,
P. Mukherjee,
期刊:
Review of Scientific Instruments
(AIP Available online 1992)
卷期:
Volume 63,
issue 11
页码: 5294-5298
ISSN:0034-6748
年代: 1992
DOI:10.1063/1.1143442
出版商: AIP
数据来源: AIP
摘要:
A new technique for the continuously variable linear attenuation of high‐power transversely excited atmospheric (TEA) CO2laser pulses is reported. The use of a binary gas mixture comprising SF6as the absorber and helium or argon as the buffer gas causes a significant enhancement in the saturation intensity, thereby allowing saturation‐free attenuation of TEA CO2laser pulses up to 1 MW/cm2. A linearly variable dynamic attenuation range of 0–30 dB, and continuously variable attenuation up to 60 dB in a 10‐cm cell length, without spatial or temporal distortion in the attenuated beam is demonstrated.
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