Jirong Yu
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View article: An orbital integrated path differential absorption lidar at 1.84 m for detecting water sources on Mars
An orbital integrated path differential absorption lidar at 1.84 m for detecting water sources on Mars Open
We propose an orbital differential absorption lidar operating near 1.84 µm to observe water vapor on Mars. With optimized wavelengths, the system offers high sensitivity to low-altitude water vapor and enables high-resolution, day-and-nigh…
View article: Martian column CO <sub>2</sub> and pressure measurement with spaceborne differential absorption lidar at 1.96 µm
Martian column CO <sub>2</sub> and pressure measurement with spaceborne differential absorption lidar at 1.96 µm Open
By utilizing progress in millijoule-level pulsed fiber lasers operating in the 1.96 µm spectral range, we introduce a concept utilizing a spaceborne differential absorption barometric lidar designed to operate within the 1.96 µm CO2 absorp…
View article: On the feasibility of measuring methane on Mars using 3.3 um lidar from space
On the feasibility of measuring methane on Mars using 3.3 um lidar from space Open
We investigate the feasibility of measuring methane on Mars using a satellite based lidar at 3.3 um which has the advantage over passive instruments in being able to measure methane at night. Line selection, power requirements, signal to n…
View article: Remote Sensing of Column CO2, Atmospheric Pressure, and Vertical Distribution of Dust and Clouds on Mars using Differential Absorption Lidar at 1.96 &#181;m on an Orbiter
Remote Sensing of Column CO2, Atmospheric Pressure, and Vertical Distribution of Dust and Clouds on Mars using Differential Absorption Lidar at 1.96 µm on an Orbiter Open
By utilizing progress in millijoule-level pulsed fiber lasers operating in the 1.96 µm spectral range, we propose a novel concept introducing a differential absorption barometric lidar designed for remote sensing of Martian atmospheri…
View article: Comment on amt-2023-180
Comment on amt-2023-180 Open
Abstract. By utilizing progress in millijoule-level pulsed fiber lasers operating in the 1.96 µm spectral range, we introduce a concept utilizing a differential absorption barometric lidar designed to operate within the 1.…
View article: Comment on amt-2023-180
Comment on amt-2023-180 Open
Abstract. By utilizing progress in millijoule-level pulsed fiber lasers operating in the 1.96 µm spectral range, we introduce a concept utilizing a differential absorption barometric lidar designed to operate within the 1.…
View article: Martian column CO <sub>2</sub> and pressure measurement with differential absorption lidar at 1.96 µm
Martian column CO <sub>2</sub> and pressure measurement with differential absorption lidar at 1.96 µm Open
By utilizing progress in millijoule-level pulsed fiber lasers operating in the 1.96 µm spectral range, we introduce a concept utilizing a differential absorption barometric lidar designed to operate within the 1.96 µm CO2 absorption band f…
View article: Martian Atmospheric Pressure Measurement from Space
Martian Atmospheric Pressure Measurement from Space Open
In order to facilitate human exploration on Mars, a need exists to study weather patterns and atmospheric conditions on Mars. Mars has colder weather than Earth, is known for its dust storms, and has a very thin atmosphere, yet its atmosph…
View article: Development of 2.05 um Fiber Lasers for CO2 DIAL lidar Measuring Martian CO2 and Pressure
Development of 2.05 um Fiber Lasers for CO2 DIAL lidar Measuring Martian CO2 and Pressure Open
A new concept of Martian differential absorption lidar (DIAL) operating in the 2050 nm CO2 absorption band for atmospheric CO2 and pressure observations has been proposed recently. Based on the concept, we are awarded to develop 2.05…
View article: To Visit the Vitamin B Family Exhibition Hall
To Visit the Vitamin B Family Exhibition Hall Open
View article: Flight Demonstration of a 2-Micron, Double Plused CO<sub>2</sub> IPDA Lidar Instrument
Flight Demonstration of a 2-Micron, Double Plused CO<sub>2</sub> IPDA Lidar Instrument Open
NASA Langley Research Center (LaRC) developed a double pulsed, high energy 2-micron Integrated Path Differential Absorption (IPDA) lidar instrument to measure atmospheric CO 2 column density. The 2-μm double pulsed IPDA lidar was flown ten…
View article: Airborne Two-Micron Double-Pulse IPDA Lidar Validation for Carbon Dioxide Measurements Over Land
Airborne Two-Micron Double-Pulse IPDA Lidar Validation for Carbon Dioxide Measurements Over Land Open
An airborne double-pulse 2-μm Integrated Path Differential Absorption (IPDA) lidar has been developed at NASA LaRC for measuring atmospheric CO 2 . IPDA was validated using NASA B-200 aircraft over land and ocean under different conditions…
View article: Development of an advanced Two-Micron triple-pulse IPDA lidar for carbon dioxide and water vapor measurements
Development of an advanced Two-Micron triple-pulse IPDA lidar for carbon dioxide and water vapor measurements Open
An advanced airborne triple-pulse 2-μm integrated path differential absorption (IPDA) lidar is under development at NASA Langley Research Center that targets both carbon dioxide (CO 2 ) and water vapor (H 2 O) measurements simultaneously a…
View article: High-energy, 2µm laser transmitter for coherent wind LIDAR
High-energy, 2µm laser transmitter for coherent wind LIDAR Open
A coherent Doppler lidar at 2μm wavelength has been built with higher output energy (300 mJ) than previously available. The laser transmitter is based on the solid-state Ho:Tm:LuLiF, a NASA Langley Research Center invented laser material f…
View article: Progress on development of an airborne two-micron IPDA lidar for water vapor and carbon dioxide column measurements
Progress on development of an airborne two-micron IPDA lidar for water vapor and carbon dioxide column measurements Open
An airborne 2 micron triple-pulse integrated path differential absorption (IPDA) lidar is currently under development at NASA Langley Research Center (LaRC). This lidar targets both atmospheric carbon dioxide (CO2) and water vapor (H2O) co…
View article: Development of Double-Pulsed Two-Micron Laser for Atmospheric Carbon Dioxide Measurements
Development of Double-Pulsed Two-Micron Laser for Atmospheric Carbon Dioxide Measurements Open
A CO2 lidar double-pulse two-micron high-energy transmitter, tuned to on- and off-line absorption wavelengths, has been developed. Transmitter operation and performance has been verified on ground and airborne platform.
View article: 2-micron triple-pulse integrated path differential absorption lidar development for simultaneous airborne column measurements of carbon dioxide and water vapor in the atmosphere
2-micron triple-pulse integrated path differential absorption lidar development for simultaneous airborne column measurements of carbon dioxide and water vapor in the atmosphere Open
For more than 15 years, NASA Langley Research Center (LaRC) has contributed in developing several 2-micron carbon dioxide active remote sensors using the DIAL technique. Currently, an airborne 2-micron triple-pulse integrated path differen…
View article: Triple-Pulsed Two-Micron Integrated Path Differential Absorption Lidar: A New Active Remote Sensing Capability with Path to Space
Triple-Pulsed Two-Micron Integrated Path Differential Absorption Lidar: A New Active Remote Sensing Capability with Path to Space Open
The two-micron wavelength is suitable for monitoring atmospheric water vapor and carbon dioxide, the two most dominant greenhouse gases. Recent advances in 2-micron laser technology paved the way for constructing state-of-the-art lidar tra…
View article: Double-Pulse Two-micron LPDA Lidar Simulation for Airborne Carbon Dioxide Measurements
Double-Pulse Two-micron LPDA Lidar Simulation for Airborne Carbon Dioxide Measurements Open
An advanced double-pulse 2-μm integrated path differential absorption lidar has been developed at NASA Langley Research Center for measuring atmospheric carbon dioxide. The instrument utilizes a state-of-the-art 2-μm laser transmitter with…
View article: Airborne 2-Micron Double Pulsed Direct Detection IPDA Lidar for Atmospheric CO<sub>2</sub>Measurement
Airborne 2-Micron Double Pulsed Direct Detection IPDA Lidar for Atmospheric CO<sub>2</sub>Measurement Open
An airborne 2-micron double-pulsed Integrated Path Differential Absorption (IPDA) lidar has been developed for atmospheric CO2 measurements. This new instrument has been flown in spring of 2014 for a total of ten flights with 27 flight hou…
View article: A Novel Triple-Pulsed 2-micrometer Lidar for Simultaneous and Independent CO2 and H2O Column Measurement
A Novel Triple-Pulsed 2-micrometer Lidar for Simultaneous and Independent CO2 and H2O Column Measurement Open
The study of global warming needs precisely and accurately measuring greenhouse gases concentrations in the atmosphere. CO2 and H2O are important greenhouse gases that significantly contribute to the carbon cycle and global radiation budge…
View article: Twenty years of Tm:Ho:YLF and LuLiF laser development for global wind and carbon dioxide active remote sensing
Twenty years of Tm:Ho:YLF and LuLiF laser development for global wind and carbon dioxide active remote sensing Open
NASA Langley Research Center (LaRC) has a long history of developing pulsed 2-μm lasers. From fundamental spectroscopy research, theoretical prediction of new materials, laser demonstration and engineering of lidar systems, it has been a v…