Search Results - "ISHII, Shoken"
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Development of a 355-nm high-spectral-resolution lidar using a scanning Michelson interferometer for aerosol profile measurement
Published in Optics express (03-08-2020)“…A simple 355-nm high-spectral-resolution lidar (HSRL) is developed for continuous observation of aerosol profiles. A scanning Michelson interferometer is used…”
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Validation of Aeolus Level 2B wind products using wind profilers, ground-based Doppler wind lidars, and radiosondes in Japan
Published in Atmospheric measurement techniques (17-11-2021)“…The first space-based Doppler wind lidar (DWL) on board the Aeolus satellite was launched by the European Space Agency (ESA) on 22 August 2018 to obtain global…”
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Structures of the Sea‐Breeze Front in Dual‐Doppler Lidar Observation and Coupled Mesoscale‐to‐LES Modeling
Published in Journal of geophysical research. Atmospheres (16-03-2019)“…Sea‐breeze front (SBF) can cause dramatic changes in weather and air quality near the coast. However, the observation and forecast of its three‐dimensional…”
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7.28-W, High-Energy, Conductively Cooled, Q-Switched Tm,Ho:YLF Laser
Published in IEEE photonics technology letters (01-01-2017)“…A diode-side-pumped laser oscillator with a Tm,Ho:YLF rod conductively cooled to -80 °C was developed. A Q-switched pulse energy of 104 mJ was achieved at a…”
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Observation of clouds, aerosols, and precipitation by multiple-field-of-view multiple-scattering polarization lidar at 355 nm
Published in Journal of quantitative spectroscopy & radiative transfer (01-09-2021)“…•A multiple-FOV multiple-scattering polarization lidar at 355 nm was developed.•The lidar could observe multiple scattering signals for clouds, aerosols and…”
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Case Study on Convection Initiation Associated with an Isolated Convective Storm Developed over Flat Terrain during TOMACS
Published in Journal of the Meteorological Society of Japan (2018)“…During the Tokyo Metropolitan Area Convection Study for Extreme Weather Resilient Cities (TOMACS), many isolated convective storms developed in the southern…”
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Development of a Multiple-Field-of-View Multiple-Scattering Polarization Lidar System at 355nm for Cloud Measurements
Published in EPJ Web of Conferences (2020)“…We developed a multiple-filed-of view multiple-scattering polarization lidar (MFMSPL) at 355nm to study microphysics of optically thick clouds and understand…”
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Journal Article Conference Proceeding -
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Feasibility Study for Future Space-Borne Coherent Doppler Wind Lidar, Part 3: Impact Assessment Using Sensitivity Observing System Simulation Experiments
Published in Journal of the Meteorological Society of Japan (2018)“…This study evaluated the impact of a future space-borne Doppler wind lidar (DWL) on a super-low-altitude orbit by using an observing system simulation…”
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Development of Direct-Detection Doppler Wind Lidar for Vertical Atmospheric Motion
Published in EPJ Web of conferences (2020)“…Wind is fundamental in many atmospheric phenomena. Global wind profile observation is important to improve numerical weather prediction (NWP) and various…”
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Journal Article Conference Proceeding -
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Development of Synergetic-Active Sensor-System for Evaluation of Observations by Earthcare
Published in EPJ Web of Conferences (01-01-2020)“…We develop the synergetic ground-based active-sensor-system for the evaluation of observations by space-borne lidars. The system consists of second version of…”
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Journal Article Conference Proceeding -
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Strong Updraft at a Sea-Breeze Front and Associated Vertical Transport of Near-Surface Dense Aerosol Observed by Doppler Lidar and Ceilometer
Published in Boundary-layer meteorology (01-10-2011)“…To study the wind field within the atmospheric boundary layer over the Tokyo metropolitan area, Doppler lidar observations were made 45 km north of Sagami Bay…”
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Ho:YLF Laser Pumped by TM:Fiber Laser
Published in EPJ Web of conferences (01-01-2016)“…A 2-micron Ho:YLF laser end-pumped by 1.94-micron Tm:fiber laser is described. A ring resonator of 3m length is adopted for the oscillator. The laser is a…”
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Journal Article Conference Proceeding -
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Dual-Doppler lidar observation of horizontal convective rolls and near-surface streaks
Published in Geophysical research letters (01-07-2008)“…Dual‐Doppler lidar and heliborne sensors were used to investigate the three‐dimensional (3D) structure of the wind field over Sendai Airport in June 2007. The…”
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Coherent Doppler LIDAR with long-duration frequency-modulated pulses for wind sensing
Published in Optics express (18-12-2023)“…A coherent Doppler LIDAR (CDL) with long-duration frequency-modulated pulses was demonstrated and validated by analyzing the data observed by a prototype. In…”
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Energy extraction in dual-wavelength Q-switched laser with a common upper laser level
Published in Applied physics. B, Lasers and optics (01-11-2014)“…The effect of lower-laser-level lifetimes on Q-switched pulse generation in a dual-wavelength solid-state laser with a common upper laser level was numerically…”
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Dissemination of optical-comb-based ultra-broadband frequency reference through a fiber network
Published in Optics express (22-08-2016)“…We disseminated an ultra-broadband optical frequency reference based on a femtosecond (fs)-laser optical comb through a kilometer-scale fiber link. Its…”
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Modeling and Design of a Resonantly Pumped Q-Switched Ho: YLF Laser with an Intracavity Pumping Schemes
Published in 2022 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR) (31-07-2022)“…An intracavity pumping scheme for a resonantly pumped Q-switched Ho:YLF laser was investigated. The results of simulations indicated that 100-mJ-Ievel…”
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Conference Proceeding -
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Influence of Surface-Based Stable Layer Development on Asian Dust Behaviour Over Tokyo
Published in Boundary-layer meteorology (01-05-2009)“…The relationship between local meteorological fields and the behaviour of airborne Asian dust that arrived in the Tokyo metropolitan area on 1 April 2007 with…”
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Coherent Doppler Lidar (CDL) for Measuring Wind with Transmission of Frequency-Modulated Pulse or Continuous Wave
Published in IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium (07-07-2024)“…Coherent Doppler lidar (CDL) for measuring wind by transmitting frequency-modulated pulse or continuous wave was proposed and demonstrated. A theoretical study…”
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Conference Proceeding -
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High-average-power operation of a 100-mJ-class, conductively cooled, Q-switched Tm, Ho:YLF laser
Published in 2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR) (01-07-2017)“…A conductively cooled Tm, Ho:YLF laser capable of producing a pulse energy higher than 100 mJ was developed. The laser crystal was cooled to -80 °C in order to…”
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Conference Proceeding