Experimental research on space-overlapped and time-synchronized dual-wavelength transversely excited atmospheric pressure CO2 laser

Zhonghua Li; Yude Li; Junmei Liao; Xiaoyong Liu; De-fu Xu; Ruijiang Ran; Lina Wei

doi:10.1117/1.2786872

1 September 2007 Experimental research on space-overlapped and time-synchronized dual-wavelength transversely excited atmospheric pressure CO₂ laser

Zhonghua Li, Yude Li, Junmei Liao, Xiaoyong Liu, De-fu Xu, Ruijiang Ran, Lina Wei

Author Affiliations +

Optical Engineering, Vol. 46, Issue 9, 094202 (September 2007). https://doi.org/10.1117/1.2786872

Abstract

We have developed a new type of dual-wavelength transversely excited atmospheric pressure (TEA) CO₂ laser that possesses space overlap and time synchronization. Our experiments have proven that the time interval of two output pulses with different frequencies can be adjusted from 1000 ns to 200 ns. In this way, the requirement of dual-wavelength excitation in a material can be achieved for isotope separation purposes. This TEA CO₂ laser contains a grating-plate cavity formed by one germanium plate and two gratings, where the two gratings partially overlap in the space. The gratings, which are placed in tandem, are mutually beneficial via the germanium plate and establish double-frequency oscillation. The dual-wavelength laser is exported from the germanium plate. It is a changing of the effective area of two gratings that enables us to adjust the space overlap of the two output pulses. By simultaneously adjusting the quantity of misalignment in the gratings angle to vary the spectral line geometry loss, which can be used to reduce the time interval of the two output pulses, a time synchronization can be achieved.

©(2007) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Zhonghua Li, Yude Li, Junmei Liao, Xiaoyong Liu, De-fu Xu, Ruijiang Ran, and Lina Wei "Experimental research on space-overlapped and time-synchronized dual-wavelength transversely excited atmospheric pressure CO₂ laser," Optical Engineering 46(9), 094202 (1 September 2007). https://doi.org/10.1117/1.2786872

Published: 1 September 2007

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KEYWORDS

Gas lasers

Carbon monoxide

Germanium

Laser applications

Lithium

Carbon dioxide lasers

Isotope separation

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