1.55-μm high-peak, high-average-power laser amplifier using an Er,Yb:glass planar waveguide for wind sensing coherent Doppler lidar.
Takeshi Sakimura,Kenichi Hirosawa,Yojiro Watanabe,Toshiyuki Ando,Shumpei Kameyama,Kimio Asaka,Hisamichi Tanaka,Masashi Furuta,Masahiro Hagio,Yoshihito Hirano,Hamaki Inokuchi,Takayuki Yanagisawa +11 more
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TLDR
A high-gain, high-peak-power laser amplifier at an eye-safe 1.55 μm wavelength using an Er,Yb:glass planar waveguide for wind sensing coherent Doppler lidars (CDLs) is developed and realizes high gain thanks to its multi-bounce optical-path configuration.Abstract:
We have developed a high-gain, high-peak-power laser amplifier at an eye-safe 1.55 μm wavelength using an Er,Yb:glass planar waveguide for wind sensing coherent Doppler lidars (CDLs). Our planar waveguide is free from stimulated Brillouin scattering and realizes high gain thanks to its multi-bounce optical-path configuration. A peak power of 5.5 kW with a pulse energy of 3.2 mJ is achieved at the repetition frequency of 4 kHz, which leads to an average power of 12.8 W. The gain is more than 23 dB. The wind sensing at more than 30 km is demonstrated with a CDL using the developed amplifier.read more
Citations
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Short-term wind power prediction based on multidimensional data cleaning and feature reconfiguration
TL;DR: A redesigned convolutional neural network was used to predict short-term wind power, and the proposed methods were trained and tested based on a dataset of a real wind farm in China and showed good performance and effectively improve the accuracy of short- term wind power prediction.
Journal ArticleDOI
1645 nm coherent Doppler wind lidar with a single-frequency Er:YAG laser.
TL;DR: Solid-state single-frequency lasers around 1.6 µm are ideal sources for coherent Doppler wind lidars (CDWLs) and a CDWL system with 1645 nm sing-frequency, injection-seeded Er:YAG ceramic laser is demonstrated.
Journal ArticleDOI
An Eye-Safe, SBS-Free Coherent Fiber Laser LIDAR Transmitter with Millijoule Energy and High Average Power
Mehmetcan Akbulut,Leonid V. Kotov,Kort Wiersma,Jie Zong,Maohe Li,Andy Miller,Arturo Chavez-Pirson,Nasser Peyghambarian +7 more
TL;DR: In this paper, an eye-safe, transform-limited, millijoule energy, and high average power fiber laser was reported, and the coherent LIDAR Figure Of Merit (FOM) was 174 mJ*sqrt(Hz) which is the highest reported for a fiber laser.
Journal ArticleDOI
Inversion probability enhancement of all-fiber CDWL by noise modeling and robust fitting
TL;DR: A correction algorithm with accurate noise modeling is proposed and demonstrated, and the accuracy of radial velocity, carrier-to-noise ratio (CNR), and spectral width are improved in wind profiling process, and a robust sine-wave fitting algorithm with data quality control is adopted in the velocity-azimuth display (VAD) scanning detection.
Journal ArticleDOI
Single-frequency Q-switched Er:YAG laser with high frequency and energy stability via the Pound–Drever–Hall locking method
TL;DR: This single frequency laser with high stability provides an excellent light source for a coherent lidar system and is the highest frequency stability and energy stability so far in a high pulse repetition frequency, large pulse energy, single-frequency Q-switched Er-doped solid laser.
References
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TL;DR: In this paper, the growth of a radiation pulse traversing a medium with an inverted population is described by nonlinear, time-dependent photon transport equations, which account for the effect of the radiation on the medium as well as vice versa.
Coherent laser radar at 2μm using solid - state lasers
Abstract: The development of a coherent laser radar system using 2- mu m Tm- and Tm, Ho-doped solid-state lasers, which is useful for the remote range-resolved measurement of atmospheric winds, aerosol backscatter, and differential absorption lidar (DIAL) measurements of atmospheric water vapor and CO/sub 2/ concentrations, is described. Measurements made with the 2- mu m coherent laser radar system, advances in the laser technology, and atmospheric propagation effects on 2- mu m coherent lidar performance are discussed. Results include horizontal atmospheric wind measurements to >20 km. vertical wind measurements to >5 km, near-horizontal cloud returns to 100 km, and hard target (mountainside) returns from 145 km. >
Journal ArticleDOI
Coherent laser radar at 2 mu m using solid-state lasers
Sammy W. Henderson,Paul Suni,Charley P. Hale,Stephen M. Hannon,James R. Magee,D.L. Bruns,E.H. Yuen +6 more
TL;DR: The development of a coherent laser radar system using 2- mu m Tm- and Tm, Ho-doped solid-state lasers, which is useful for the remote range-resolved measurement of atmospheric winds, aerosol backscatter, and differential absorption lidar (DIAL) measurements of atmospheric water vapor and CO/sub 2/ concentrations, is described.
Journal ArticleDOI
Eye-safe coherent laser radar system at 2.1 microm using Tm,Ho:YAG lasers.
TL;DR: An eye-safe pulsed coherent laser radar has been developed by using single-frequency Tm,Ho:YAG lasers and heterodyne detection.
Journal ArticleDOI
Cooperative upconversion and energy transfer of new high Er 3+ - and Yb 3+ –Er 3+ -doped phosphate glasses
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