4 November 2004 Diode-pumped double-pulsed Ho:Tm:LuLF laser at 2.05 μm for CO2 differential absorption lidar (DIAL)
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Abstract
It has been realized that eye-safe 2-mm all-solid-state lasers are important laser sources for an accurate measurement of the CO2 concentration in the atmosphere. Served as laser transmitters, they can be integrated into ground-based, airborne-base, and spaceborne-based CO2 Differential Absorption Lidars (DIALs) to accomplish the measurement. In addition, the lasers are also ideal laser pumping sources for a ZnGeP2 (ZGP) Optical Parametric Oscillator (OPO) or an Optical Parametric Amplifier (OPA) to achieve tunable laser output in 3~5 mm. In this spectrum region, the other important greenhouse gases, water vapor (H2O), carbon monoxide (CO), and methane (CH4) in the atmosphere can be measured. In this paper, we report a diode-pumped, double-pulsed, Q-switched, eye-safe Ho:Tm:LuLF laser at 2.05 mm developed for ground-based and airborne-based CO2 Differential Absorption Lidars (DIALs). The technology can be easily transferred to a space-borne CO2 DIAL in the future. The total output pulse energy of the laser is 220 mJ and 204 mJ per pair of pulses at 2 Hz and at 10 Hz respectively. The related optical energy conversion efficiency is 6.7% and 5.9% respectively.
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Songsheng Chen, Songsheng Chen, Jirong Yu, Jirong Yu, Mulugeta Petros, Mulugeta Petros, Yingxin Bai, Yingxin Bai, Bo C. Trieu, Bo C. Trieu, Upendra N. Singh, Upendra N. Singh, Michael J. Kavaya, Michael J. Kavaya, "Diode-pumped double-pulsed Ho:Tm:LuLF laser at 2.05 μm for CO2 differential absorption lidar (DIAL)", Proc. SPIE 5575, Laser Radar Techniques for Atmospheric Sensing, (4 November 2004); doi: 10.1117/12.568418; https://doi.org/10.1117/12.568418
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