An Eye-Safe, SBS-Free Coherent Fiber Laser LIDAR Transmitter with Millijoule Energy and High Average Power
نویسندگان
چکیده
We report on an eye-safe, transform-limited, millijoule energy, and high average power fiber laser. The gain short length of the NP phosphate-glass fibers enable SBS-free operation with kW level peak power. output energy is up to 1.3 mJ, 23 W at 18 kHz repetition rate 600 ns pulses (peak > 2.1 kW). PER ?16 dB M2 beam 1.33 × 1.18. coherent LIDAR Figure Of Merit (FOM) 174 mJ*sqrt(Hz), which our knowledge highest reported for a also 0.75 mJ >3.7 down 200 1.21 3–5 current system.
منابع مشابه
High-energy Multipass Forward Raman Shifter as an Eye-safe Laser Source for Lidar
A methane Raman cell optimized for generating high energy laser pulses at 1.54 microns wavelength is characterized. 1st Stokes conversion efficiencies up to 43% – equivalent to 62% photon conversion efficiency – were measured. Experimental results show output average power in excess of 17.5 W, pulse energies of 350 mJ at 50Hz, with good beam quality (M < 6.) Narrow bandwidth output is produced ...
متن کاملInvestigations of Sbs and Laser Gain Competition in High-power Phase Modulated Fiber Amplifiers (postprint)
We present experimental results of SBS suppression in high power, monolithic, Yb-doped fiber amplifiers via phase modulated laser gain competition. To narrow the linewidth, two-tone laser gain competition between broad (1036 nm) and narrow linewidth (1064 nm) laser signals is investigated in conjunction with phase modulation and yields pump limited output powers of 600 W. Here integration of bo...
متن کاملFiber Laser Coherent LIDAR for Wake-Vortex Hazard Detection
1. Introduction Active remote sensors are turning into indispensible tools for aviation. Especially, coherent lidar systems which can detect atmospheric aviation hazards such as wake-vortices, air drafts, wind shear and turbulence have received wide interest. Such lidars have been deployed with increasing numbers at airports and research facilities around the world. Some of the common aviation ...
متن کاملCharacterization of a High-Power Fiber Master Oscillator Power Amplifier (MOPA) Laser as an Optical Communications Transmitter
Deep-space optical communications requires high-power laser transmitters with good beam quality that can be modulated at fairly high data rates. We report here on the performance of a fiber-based master oscillator power amplifier (MOPA) laser, commercially developed to JPL requirements with specifications derived from a Mars mission optical downlink scenario. The laser demonstrates up to 1.6-kW...
متن کاملEfficient high-peak-power AlGaInAs eye-safe wavelength disk laser with optical in-well pumping.
We have demonstrated an efficient high-peak-power AlGaInAs eye-safe wavelength disk laser at 1555 nm. The quantum defect and the thermal load are significantly reduced by pumping the quantum well directly. The overall conversion efficiency is enhanced over three times compared with the barrier pumping method. With a pump peak power of 3.7 kW, an output peak power of 0.52 kW is generated at a pu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Photonics
سال: 2021
ISSN: ['2304-6732']
DOI: https://doi.org/10.3390/photonics8010015