scholarly journals Generation of high-power single-frequency 3975 nm laser with long lifetime and perfect beam quality in an external enhancement-cavity with MgO-doped PPSLT

2016 ◽  
Vol 24 (21) ◽  
pp. 23726 ◽  
Author(s):  
Huadong Lu ◽  
Jiao Wei ◽  
Yixiao Wei ◽  
Jing Su ◽  
Kunchi Peng
Keyword(s):  
High Power ◽  
Beam Quality ◽  
Single Frequency ◽  
Long Lifetime

scholarly journals A Review of the High-Power All-Solid-State Single-Frequency Continuous-Wave Laser

Micromachines ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1426
Author(s):  
Weina Peng ◽  
Pixian Jin ◽  
Fengqin Li ◽  
Jing Su ◽  
Huadong Lu ◽  
...  
Keyword(s):  
Solid State ◽  
High Power ◽  
Continuous Wave ◽  
Beam Quality ◽  
Optical Loss ◽  
Low Noise ◽  
Stimulated Emission ◽  
Single Frequency ◽  
Laser Resonator ◽  
Laser Guidance

High-power all-solid-state single-frequency continuous-wave (CW) lasers have been applied in basic research such as atomic physics, precision measurement, radar and laser guidance, as well as defense and military fields owing to their intrinsic advantages of high beam quality, low noise, narrow linewidth, and high coherence. With the rapid developments of sciences and technologies, the traditional single-frequency lasers cannot meet the development needs of emerging science and technology such as quantum technology, quantum measurement and quantum optics. After long-term efforts and technical research, a novel theory and technology was proposed and developed for improving the whole performance of high-power all-solid-state single-frequency CW lasers, which was implemented by actively introducing a nonlinear optical loss and controlling the stimulated emission rate (SER) in the laser resonator. As a result, the output power, power and frequency stabilities, tuning range and intensity noise of the single-frequency lasers were effectively enhanced.

PHASE CONJUGATION IN A HIGH POWER REGENERATIVE LASER AMPLIFIER SYSTEM

1993 ◽  
Vol 02 (01) ◽  
pp. 171-185 ◽  
Author(s):  
L.A. HACKEL ◽  
J.L. MILLER ◽  
C.B. DANE
Keyword(s):  
Power Amplifier ◽  
High Power ◽  
Beam Quality ◽  
Phase Conjugation ◽  
Near Field ◽  
Average Power ◽  
Master Oscillator ◽  
Single Frequency ◽  
Phase Conjugate ◽  
Phase Conjugate Mirror

We discuss the design and performance of a master oscillator/regenerative power amplifier laser system using a stimulated Brillouin scattering phase conjugator to control beam aberrations within the amplifier cavity. The master oscillator is a self-seeded Q- switched Nd:YLF laser which provides up to 40 mJ of single frequency light in a 10 ns to 15 ns pulse for amplification. The power amplifier uses a regenerative ring design with approximately 10 total passes and a phase conjugate mirror after the 5th pass. The conjugator is necessary to help produce a plane wavefront and thus a uniform intensity distribution within the ring, a requirement to avoid damage at the high intensities. The energy at the phase conjugate mirror exceeds 1 J/pulse and thus careful attention is paid to the tradeoff between input energy, conjugator reflectivity and near field spatial fidelity of the return. The laser output is in the range of 20 J/pulse, 2 GW peak with average power of 70 W. Measurements have been made at high power of the near field and far field beam quality.

scholarly journals Optimized Growth and Laser Application of Yb:LuAG Single-Crystal Fibers by Micro-Pulling-Down Technique

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 78
Author(s):  
Anye Wang ◽  
Jian Zhang ◽  
Shuai Ye ◽  
Xiaofei Ma ◽  
Baiyi Wu ◽  
...  
Keyword(s):  
Single Crystal ◽  
High Power ◽  
Slope Efficiency ◽  
Continuous Wave ◽  
Beam Quality ◽  
Axial Direction ◽  
Optical Quality ◽  
Central Wavelength ◽  
High Power Lasers ◽  
Crystal Fibers

Single-crystal fibers (SCFs) have a great application potential in high-power lasers due to their excellent performance. In this work, high-quality and crack-free Yb3+:Lu3Al5O12 (Yb:LuAG) SCFs were successfully fabricated by the micro-pulling-down (μ-PD) technology. Based on the laser micrometer and the X-ray Laue diffraction results, these Yb:LuAG SCFs have a less than 5% diameter fluctuation and good crystallinity along the axial direction. More importantly, the distribution of Yb ions is proved to be uniform by electron probe microanalysis (EPMA) and the scanning electron microscope (SEM). In the laser experiment, the continuous-wave (CW) output power using a 1 mm diameter Yb:LuAG single-crystal fiber is determined to be 1.96 W, at the central wavelength of 1047 nm, corresponding to a slope efficiency of 13.55%. Meanwhile, by applying a 3 mm diameter Yb:LuAG SCF, we obtain a 4.7 W CW laser output at 1049 nm with the slope efficiency of 22.17%. The beam quality factor M2 is less than 1.1 in both conditions, indicating a good optical quality of the grown fiber. Our results show that the Yb:LuAG SCF is a potential solid-state laser gain medium for 1 μm high-power lasers.

Pulse compression and beam quality improvement of a single-frequency Nd:YAG MOPA system

2013 ◽  
Author(s):  
Oliver Lux ◽  
Hristomir Stankov ◽  
Haro Fritsche ◽  
Hans J. Eichler
Keyword(s):  
Quality Improvement ◽  
Pulse Compression ◽  
Beam Quality ◽  
Single Frequency

High-power, continuous-wave, single-frequency, all-periodically-poled, near-infrared source

2012 ◽  
Vol 37 (24) ◽  
pp. 5049 ◽  
Author(s):  
Kavita Devi ◽  
S. Chaitanya Kumar ◽  
M. Ebrahim-Zadeh
Keyword(s):  
High Power ◽  
Near Infrared ◽  
Continuous Wave ◽  
Single Frequency ◽  
Periodically Poled ◽  
Infrared Source

scholarly journals High power and high efficiency single-frequency 1030 nm DFB fiber laser

2022 ◽  
Vol 145 ◽  
pp. 107519
Author(s):  
Yue Tao ◽  
Song Zhang ◽  
Man Jiang ◽  
Can Li ◽  
Pu Zhou ◽  
...  
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
High Efficiency ◽  
Single Frequency

Experimental Investigation of Limits to Slow Axis Beam Quality in High Power Broad Area Diode Lasers

2014 ◽  
Author(s):  
M. Winterfeldt ◽  
P. Crump ◽  
H. Wenzel ◽  
G. Erbert ◽  
G. Trankle
Keyword(s):  
Experimental Investigation ◽  
High Power ◽  
Beam Quality ◽  
Diode Lasers ◽  
Broad Area ◽  
Slow Axis

Improving the beam quality of high-power laser diodes by introducing lateral periodicity into waveguides

2013 ◽  
Author(s):  
Grzegorz Sobczak ◽  
Elżbieta Dąbrowska ◽  
Marian Teodorczyk ◽  
Joanna Kalbarczyk ◽  
Andrzej Maląg
Keyword(s):  
High Power ◽  
Beam Quality ◽  
Laser Diodes ◽  
High Power Laser ◽  
Power Laser
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