| Autor: |
Yueting Zhou, Jianxing Liu, Songjie Guo, Weiguang Ma, Lei Dong, Lei Zhang, Wangbao Yin, Liantuan Xiao, Suotang Jia, Gang Zhao, Zhensong Cao, Yongqian Wu, Axner Ove |
| Předmět: |
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| Zdroj: |
Atmospheric Measurement Techniques Discussions; 2018, p1-12, 12p |
| Abstrakt: |
Lidar is an effective tool for high altitude atmospheric measurement in which a weak absorption line for the target gas is selected to ensure a large optical depth. The laser frequency stabilization to the line center is required and a sub-Doppler (sD) spectroscopy of the target line is preferred as a frequency reference. In this paper, a novel universal sD NICE-OHMS instrumentation based on a fiber coupled optical single-sideband electro-optic-modulator (f-SSM) for the potential application in atmospheric Lidar is reported. The f-SSM can replace all frequency actuators in the system, so as to eliminate the individual design of feedback servos that often are tailored for each laser. The universality of the instrumentation was demonstrated by the alternative use of either an Er-doped fiber laser or a whispering gallery mode laser. Then the instruments based on both lasers were used to produce the sD signals of acetylene which worked as a frequency reference to stabilize the laser. By performing the lockings, relative frequency stabilizations of 8.3×10−13 and 7.5×10−13 at integration time of 240s were demonstrated. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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