Aerosol profile measurement by a high-spectral-resolution lidar with a scanning interferometer

Yoshitaka Jin; Nobuo Sugimoto; Tomoaki Nishizawa; Hajime Okamoto

Aerosol profile measurement by a high-spectral-resolution lidar with a scanning interferometer

Yoshitaka Jin, Nobuo Sugimoto, Tomoaki Nishizawa, Hajime Okamoto

Division of Earth Environment Dynamics

Research output: Contribution to conference › Paper › peer-review

Abstract

A simple high-spectral-resolution lidar (HSRL) is developed for continuous observation of aerosol profile. The second harmonic of an injection-seeding Nd:YAG laser is used for the light source. A scanning interferometer is used to separate the Rayleigh and Mie backscattering components. The interferometer is periodically scanned in the span of one fringe. Lidar signals at the minimum and maximum Mie scattering transmission are obtained. Rayleigh scattering signals are derived by subtracting the bias (cross-talk) component from the lidar signals at the minimum Mie scattering transmission, and the aerosol extinction coefficient is retrieved. The interferometer transmittance and the fringe position are calibrated with the reference signals taken from a portion of the transmitted laser beam. The method is originally developed for an HSRL with a multimode laser, but the measurement sensitivity is higher when using a single-mode laser.

Original language	English
Publication status	Published - Jan 1 2018
Event	19th Coherent Laser Radar Conference, CLRC 2018 - Okinawa, Japan Duration: Jun 18 2018 → Jun 21 2018

Other

Other	19th Coherent Laser Radar Conference, CLRC 2018
Country	Japan
City	Okinawa
Period	6/18/18 → 6/21/18

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics

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title = "Aerosol profile measurement by a high-spectral-resolution lidar with a scanning interferometer",

abstract = "A simple high-spectral-resolution lidar (HSRL) is developed for continuous observation of aerosol profile. The second harmonic of an injection-seeding Nd:YAG laser is used for the light source. A scanning interferometer is used to separate the Rayleigh and Mie backscattering components. The interferometer is periodically scanned in the span of one fringe. Lidar signals at the minimum and maximum Mie scattering transmission are obtained. Rayleigh scattering signals are derived by subtracting the bias (cross-talk) component from the lidar signals at the minimum Mie scattering transmission, and the aerosol extinction coefficient is retrieved. The interferometer transmittance and the fringe position are calibrated with the reference signals taken from a portion of the transmitted laser beam. The method is originally developed for an HSRL with a multimode laser, but the measurement sensitivity is higher when using a single-mode laser.",

author = "Yoshitaka Jin and Nobuo Sugimoto and Tomoaki Nishizawa and Hajime Okamoto",

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T1 - Aerosol profile measurement by a high-spectral-resolution lidar with a scanning interferometer

AU - Jin, Yoshitaka

AU - Sugimoto, Nobuo

AU - Nishizawa, Tomoaki

AU - Okamoto, Hajime

PY - 2018/1/1

Y1 - 2018/1/1

N2 - A simple high-spectral-resolution lidar (HSRL) is developed for continuous observation of aerosol profile. The second harmonic of an injection-seeding Nd:YAG laser is used for the light source. A scanning interferometer is used to separate the Rayleigh and Mie backscattering components. The interferometer is periodically scanned in the span of one fringe. Lidar signals at the minimum and maximum Mie scattering transmission are obtained. Rayleigh scattering signals are derived by subtracting the bias (cross-talk) component from the lidar signals at the minimum Mie scattering transmission, and the aerosol extinction coefficient is retrieved. The interferometer transmittance and the fringe position are calibrated with the reference signals taken from a portion of the transmitted laser beam. The method is originally developed for an HSRL with a multimode laser, but the measurement sensitivity is higher when using a single-mode laser.

AB - A simple high-spectral-resolution lidar (HSRL) is developed for continuous observation of aerosol profile. The second harmonic of an injection-seeding Nd:YAG laser is used for the light source. A scanning interferometer is used to separate the Rayleigh and Mie backscattering components. The interferometer is periodically scanned in the span of one fringe. Lidar signals at the minimum and maximum Mie scattering transmission are obtained. Rayleigh scattering signals are derived by subtracting the bias (cross-talk) component from the lidar signals at the minimum Mie scattering transmission, and the aerosol extinction coefficient is retrieved. The interferometer transmittance and the fringe position are calibrated with the reference signals taken from a portion of the transmitted laser beam. The method is originally developed for an HSRL with a multimode laser, but the measurement sensitivity is higher when using a single-mode laser.

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