Analysis of the optimal operating wavelength of spaceborne oceanic lidar

Qun, 刘群 Liu; Chong, 刘崇 Liu; Xiaolei, 朱小磊 Zhu; Yudi, 周雨迪 Zhou; Cheng-feng, 乐成峰 Le; Jian, 白剑 Bai; Yan, 贺岩 He; Decang, 毕德仓 Bi; Dong, 刘东 Liu

doi:10.3788/co.20201301.0148

Cited by 4 publications

(1 citation statement)

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“…Moreover, the wavelength of 486 nm matches with the solar H-β Fraunhofer line, so it can help lidar systems to improve their signal-tonoise ratios [5]. Since the 486 nm wavelength was in the optimal spectral range for oceanic lidar [6], the generation of 486 nm blue pulsed laser with high peak power output has recently received much attentions. * Authors to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

486 nm pulsed Nd:YLF laser with intracavity sum-frequency mixing

Zhang¹,

Ma²,

Lu³

et al. 2023

Laser Phys. Lett.

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An intracavity sum-frequency pulsed laser emitting at 486 nm was demonstrated in a combined cavity for two electro-optically Q-switched Nd:YLF fundamental lasers emitting at 908 nm and 1047 nm respectively. Pumped by two 806 nm LDs at 50 Hz repetition rate, while the intracavity pulse energy reached 6.25 mJ at 908 nm and 2.57 mJ at 1047 nm, maximum output pulse energy of 0.26 mJ at 486.4 nm wavelength was successfully achieved by intracavity sum-frequency. The corresponding spectral bandwidth was less than 0.08 nm, and the pulse width was about 11.8 ns. The peak power of the blue laser pulse was up to 21.8 kW, and the results provided a new blue pulsed laser source around 486 nm for ocean detection applications.

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Section: Introductionmentioning

confidence: 99%

486 nm pulsed Nd:YLF laser with intracavity sum-frequency mixing

Zhang¹,

Ma²,

Lu³

et al. 2023

Laser Phys. Lett.

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Compact wavelength tunable output around 440 nm pulsed laser for oceanic lidar application

Zhang

et al. 2021

Optics Communications

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Detection of Chlorophyll a and CDOM Absorption Coefficient with a Dual-Wavelength Oceanic Lidar: Wavelength Optimization Method

et al. 2020

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To overcome the retrieval problems in complex water, dual working wavelengths are required instead of a single wavelength in oceanic lidar. The wavelength optimization method of detecting chlorophyll a and Colored Dissolved Organic Matter (CDOM) absorption coefficient with a dual-wavelength lidar is studied in this paper. The inversion methods of chlorophyll a and CDOM absorption are developed based on the water absorption characteristics, which then lead to the inversion error equations. The effects of the wavelength on the inversion errors are studied. For the case in which λ1 and λ2 are both random, the errors are relatively small when λ1 is chosen between 420 and 560 nm and λ2 is selected under 420 nm. For the case in which λ1 is fixed at 532 nm, the errors generally decrease with decreasing λ2, with minimums around 300 and 356–360 nm under different water conditions. The wavelength optimization method discussed in this paper and the penetration depth criterion will be beneficial to the design of the dual-wavelength lidar.

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Analysis of the optimal operating wavelength of spaceborne oceanic lidar

Cited by 4 publications

References 0 publications

486 nm pulsed Nd:YLF laser with intracavity sum-frequency mixing

486 nm pulsed Nd:YLF laser with intracavity sum-frequency mixing

Compact wavelength tunable output around 440 nm pulsed laser for oceanic lidar application

Detection of Chlorophyll a and CDOM Absorption Coefficient with a Dual-Wavelength Oceanic Lidar: Wavelength Optimization Method

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