期刊
APPLIED PHYSICS B-LASERS AND OPTICS
卷 116, 期 4, 页码 967-976出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00340-014-5784-3
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资金
- French National Agency [SENTINELLE: ANR-07-PCO2-007]
- French National Space Agency (CNES)
- French National Research Center (CNRS) through the Institut National des Sciences de l'Univers (INSU-CNRS)
We report on the development and the demonstration of a two-wavelength single-frequency laser oscillator based on Ho:YLF crystal. This laser is especially suitable for application as a transmitter in differential absorption lidar (DIAL)/integrated path differential absorption (IPDA) measurements of atmospheric carbon dioxide (CO2) using the R30 CO2 absorption line at 2,050.967 nm. The oscillator consists in a fiber-coupled and free-space solid-state hybrid system and can be used in high-energy middle-rate or moderate-energy high-rate configurations. The latter produced On and Off sequentially single-frequency laser pulses with 13 mJ of energy at a repetition rate of 2 kHz and pulse duration of 42 ns. The pulse energy and frequency stabilities are specially documented in free-running, single-frequency and two-frequency seeding single-mode operations. Standard deviation is 7.7 % for pulse energy and 2 MHz for frequency stability for the two-wavelength seeding operation. Allan variance plot shows that frequency fluctuations are reduced below 70 kHz for 10 s of averaging which is suitable for accurate CO2 DIAL or IPDA measurements.
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