High-Power Quasi-CW Diode-Pumped 750 nm VECSEL Emitting a Peak Power of 29.6 W and an Average Power of 8.5 W

2021 ◽  
Author(s):  
Pascal J. Weinert ◽  
Marius Grossmann ◽  
Uwe Brauch ◽  
Michael Jetter ◽  
Peter Michler ◽  
...  
Keyword(s):  
High Power ◽  
Peak Power ◽  
Average Power ◽  
Diode Pumped

20-J Diode-Pumped Zig-Zag Slab Laser with 2-GW Peak Power and 200-W Average Power

2005 ◽  
Author(s):  
T. Kawashima ◽  
T. Kurita ◽  
O. Matsumoto ◽  
T. Ikegawa ◽  
T. Sekine ◽  
...  
Keyword(s):  
Peak Power ◽  
Average Power ◽  
Slab Laser ◽  
Diode Pumped

scholarly journals Diode-pumped high-power sub-100 fs Kerr-lens mode-locked Yb:CaYAlO4 laser with 185 MW peak power

2019 ◽  
Vol 27 (15) ◽  
pp. 21448 ◽  
Author(s):  
Wenlong Tian ◽  
Chen Yu ◽  
Jiangfeng Zhu ◽  
Dacheng Zhang ◽  
Zhiyi Wei ◽  
...  
Keyword(s):  
High Power ◽  
Peak Power ◽  
Diode Pumped

Diode-pumped high power sub-100 fs Kerr-lens mode-locked Yb:CaYAlO4 laser with 1.85 MW peak power

2019 ◽  
Author(s):  
Wenlong Tian ◽  
Chen Yu ◽  
Jiangfeng Zhu ◽  
Dacheng Zhang ◽  
Zhiyi Wei ◽  
...  
Keyword(s):  
High Power ◽  
Peak Power ◽  
Diode Pumped

Design of Multi-Mode Microwave Control Combination for InSAR System

2013 ◽  
Vol 367 ◽  
pp. 401-404
Author(s):  
Yuan Yuan ◽  
Xue Quan Yan ◽  
Zheng Lin Cao
Keyword(s):  
High Power ◽  
Peak Power ◽  
Average Power ◽  
Center Frequency ◽  
Switch Time ◽  
Combination System ◽  
Microwave Control ◽  
External Interface ◽  
Multi Mode ◽  
The Way

This paper provides a multi-mode Microwave Control Combination (MCC) for InSAR system, where the center frequency is F0 with 800 MHz bandwidth, and the size is smaller than 355mm×480mm×155mm. A special InSAR system is introduced with finite baseline between antennas, gets the equal baseline longer by the way of MCC fast switch and makes the channel phrase satisfy the special InSAR system demand. In the MCC design, isolation between antenna channels, high-power and fast channel switch of the system are considered firstly, which are very important in finite airborne space for this InSAR system. The combination system can be changed to three working modes with different configuration but same external interface. This MCC can support average power 400w and peak power 4000w, achieve isolation between radiation channels more than 48dB and channel switch time less than 10μs.

High repetition rate, tunable, Q-switched diode pumped Tm:YLF laser

2009 ◽  
Vol 17 (4) ◽  
Author(s):  
Ł. Gorajek ◽  
J. Jabczyński ◽  
W. Żendzian ◽  
J. Kwiatkowski ◽  
H. Jelinkova ◽  
...  
Keyword(s):  
Pulse Duration ◽  
Repetition Rate ◽  
Peak Power ◽  
Average Power ◽  
Pump Energy ◽  
Pump Current ◽  
High Repetition Rate ◽  
Continuous Tuning ◽  
Diode Pumped ◽  
Free Running

AbstractThe aim of work was to characterize a simple oscillator consisted of Tm:YLF crystal end-pumped by a fiber coupled diode laser and active Q-switch with tunability option. About 7 W with near 35% slope efficiency was demonstrated in a free-running mode. The divergence angle was about 4.3 mrad and estimated parameter M2 < 1.3. Continuous tuning by means of Lyot’s filter, consisted of 2 quartz plates in the range of 1879.0–1939.4 nm with less than 1-nm linewidth, was achieved. For the best case (10-ms pump pulse duration, 42-A pump current corresponding to 266 mJ of pump energy), the Q-switched energy was 10.5 mJ with pulse duration of 22 ns corresponding to near 0.5 MW peak power. The 2.5 W of average power with 12.6-kW peak power and 2000-Hz repetition rate was demonstrated for cw pumping regime.

scholarly journals Yb3+ doped single-mode silica fibre laser system for high peak power applications

2020 ◽  
Vol 12 (4) ◽  
pp. 118
Author(s):  
Marcin Franczyk ◽  
Dariusz Pysz ◽  
Filip Włodarczyk ◽  
Ireneusz Kujawa ◽  
Ryszard Buczyński
Keyword(s):  
High Power ◽  
Fiber Lasers ◽  
Peak Power ◽  
Average Power ◽  
Single Mode ◽  
High Energy ◽  
High Peak ◽  
Fibre Laser ◽  
High Peak Power ◽  
Nanosecond Pulses

We present ytterbium doped silica single-mode fibre components for high power and high energy laser applications. We developed in-house the fibre laser with high efficiency of 65% according to the launched power, the threshold of 1.16W and the fibre length of 20 m. We also elaborated the fibre with 20 µm in diameter core suitable for amplifying the beam generated in oscillator. We implemented made in-house endcaps to prove the utility of the fibre towards high peak power applications. Full Text: PDF ReferencesStrategies Unlimited, The Worldwide Market for Lasers: Market Review and Forecast, 2020 DirectLink J. Zhu, P. Zhou, Y. Ma, X. Xu, and Z. Liu, "Power scaling analysis of tandem-pumped Yb-doped fiber lasers and amplifiers", Opt. Express 19, 18645 (2011) CrossRef IPG Photonics, Product information, accessed: October, 2020. DirectLink J.W. Dawson, M. J. Messerly, R. J. Beach, M. Y. Shverdin, E. A. Stappaerts, A. K. Sridharan, P. H. Pax, J. E. Heebner, C. W. Siders, and C. P. J. Barty, "Analysis of the scalability of diffraction-limited fiber lasers and amplifiers to high average power", Opt. Express 16, 13240 (2008) CrossRef W. Koechner, "Solid-State Laser Engineering", Springer Series in Optical Science, Berlin 1999 CrossRef A. V. Smith, and B. T. Do, "Bulk and surface laser damage of silica by picosecond and nanosecond pulses at 1064 nm", Appl. Opt. 47, 4812 (2008), CrossRef M. N. Zervas, C. Codemard, "High Power Fiber Lasers: A Review", IEEE J. Sel. Top. Quantum Electron. 20, 1, 2014 CrossRef D.J. Richardson, J. Nilsson, and W.A. Clarkson, "High power fiber lasers: current status and future perspectives [Invited]", J. Opt. Soc. Am. B, 27, 63, 2010, CrossRef M. Li, X. Chen, A. Liu, S. Gray, J. Wang, D. T. Walton; L. A. Zenteno, "Limit of Effective Area for Single-Mode Operation in Step-Index Large Mode Area Laser Fibers", J. Lightw. Technol., 27, 3010, 2009, CrossRef J. Limpert, S. Hofer, A. Liem, H. Zellmer, A. Tunnermann., S. Knoke, and H. Voelckel, "100-W average-power, high-energy nanosecond fiber amplifier", App.Phys.B 75, 477, 2002, CrossRef

scholarly journals High-power linear-polarization burst-mode all-fibre laser and generation of frequency-adjustable microwave signal

2021 ◽  
Vol 9 ◽  
Author(s):  
Xuan He ◽  
Bin Zhang ◽  
Shuailin Liu ◽  
Linyong Yang ◽  
Jinmei Yao ◽  
...  
Keyword(s):  
High Power ◽  
Power Distribution ◽  
Peak Power ◽  
High Performance ◽  
Average Power ◽  
Microwave Signal ◽  
Fibre Laser ◽  
Microwave Generation ◽  
Burst Mode ◽  
Mode Fibre

Abstract Narrowband microwave generation with tuneable frequency is demonstrated by illuminating a photoconductive semiconductor switch (PCSS) with a burst-mode fibre laser. The whole system is composed of a high-power linearly polarized burst-mode pulsed fibre laser and a linear-state PCSS. To obtain a high-performance microwave signal, a desired envelope of burst is necessary and a pulse pre-compensation technique is adopted to avoid envelope distortion induced by the gain-saturation effect. Resulting from the technique, homogenous peak power distribution in each burst is ensured. The maximum energy of the laser burst pulse reaches 200 μJ with a burst duration of 100 ns at the average power of 10 W, corresponding to a peak power of 4 kW. When the PCSS is illuminated by the burst-mode fibre laser, narrowband microwave generation with tuneable frequency (0.80–1.12 GHz) is obtained with a power up to 300 W. To the best of the authors’ knowledge, it is the first demonstration of frequency-tuneable narrowband microwave generation based on a fibre laser. The high-power burst-mode fibre laser reported here has great potential for generating high-power arbitrary microwave signals for a great deal of applicable demands such as smart adaptive radar and intelligent high-power microwave systems.

20-J Diode-Pumped Zig-Zag Slab Laserwith 2-GW Peak Power and 200-W Average Power

2005 ◽  
Author(s):  
T. Kawashima ◽  
T. Kurita ◽  
O. Matsumoto ◽  
T. Ikegawa ◽  
T. Sekine ◽  
...  
Keyword(s):  
Peak Power ◽  
Average Power ◽  
Diode Pumped

scholarly journals An Eye-Safe, SBS-Free Coherent Fiber Laser LIDAR Transmitter with Millijoule Energy and High Average Power

Photonics ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 15
Author(s):  
Mehmetcan Akbulut ◽  
Leonid Kotov ◽  
Kort Wiersma ◽  
Jie Zong ◽  
Maohe Li ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Repetition Rate ◽  
Peak Power ◽  
Figure Of Merit ◽  
Current System ◽  
Glass Fibers ◽  
Average Power ◽  
High Gain ◽  
Short Length ◽  
High Average Power

We report on an eye-safe, transform-limited, millijoule energy, and high average power fiber laser. The high gain and short length of the NP phosphate-glass fibers enable the SBS-free operation with kW level peak power. The output energy is up to 1.3 mJ, and the average power is up to 23 W at an 18 kHz repetition rate with 600 ns pulses (peak power > 2.1 kW). The PER is ≈16 dB and the M2 of the beam is 1.33 × 1.18. The coherent LIDAR Figure Of Merit (FOM) is 174 mJ*sqrt(Hz), which to our knowledge is the highest reported for a fiber laser. We also report 0.75 mJ energy and >3.7 kW peak power with down to 200 ns pulses and up to 1.21 mJ energy with a 3–5 kHz repetition rate operation of the current system.

scholarly journals Reactive High-Power Impulse Magnetron Sputtering of Chromium-Carbon Films

Coatings ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1269
Author(s):  
Chin-Chiuan Kuo ◽  
Chun-Hui Lin ◽  
Jing-Tang Chang ◽  
Yu-Tse Lin
Keyword(s):  
Magnetron Sputtering ◽  
Amorphous Carbon ◽  
High Power ◽  
Deposition Temperature ◽  
Average Power ◽  
Carbon Films ◽  
Strengthening Effect ◽  
Substrate Bias ◽  
Hydrogenated Amorphous Carbon ◽  
Hydrogenated Amorphous

Chromium-carbon films were deposited by utilizing reactive high-power impulse magnetron sputtering at different mixture ratios of ethyne and argon atmosphere, and different substrate bias voltages and deposition temperature, with the same pulse frequency, duty cycle, and average power. The microstructure and mechanical properties of the obtained films were compared. The films consist of amorphous or nanocrystalline chromium carbide, hydrogenated amorphous carbon, and minor α-chromium phase. Decreasing the fraction of ethyne increases the content of the α-chromium phase but decreases hydrogenated amorphous carbon phase. The film’s hardness increases by enhancing the negative substrate bias and raising the deposition temperature, which could be attributed to the increase of film density and the Hall–Petch strengthening effect induced by the nanoscale crystallization of the amorphous carbide phase.

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