scholarly journals THE INVESTIGATION OF THERMAL LENS PROPERTIES IN THE ACTIVE ELEMENT OF LASER AMPLIFIER WITH HIGH POWER DIODE PUMP

2019 ◽  
Vol 8 ◽  
pp. 3-9
Author(s):  
Gleb Kuptsov ◽  
Alexei Laptev ◽  
Vladimir Petrov ◽  
Victor Petrov ◽  
Efim Pestryakov
Keyword(s):  
Pump Power ◽  
High Power ◽  
Thermal Lens ◽  
Active Element ◽  
Laser System ◽  
Diode Pump ◽  
Average Output ◽  
Focal Distance ◽  
Laser Amplifiers ◽  
Laser Amplification

A femtosecond laser system with a pulse repetition rate up to 1 kHz is being developed at the Institute of Laser Physics of the SB RAS. The key component of the system is the channel of laser amplification based on media doped with Yb3+ ions. The designed average output power of the channel is 300 W. Thermal effects in high-power laser amplifiers are decisive for the parameters of the radiation at the output of system. In this paper the results of experimental measurements of thermal lens focal distance dependence in Yb:YAG active element on diode pump power using geometric method are given. Calculation of the dependence thermal lens focal distance on the power of pump power and a comparison with experimental data are given.

scholarly journals THE INVESTIGATION OF THERMAL LENS PROPERTIES IN THE ACTIVE ELEMENT OF LASER AMPLIFIER WITH HIGH POWER DIODE PUMP

2019 ◽  
Vol 24 (2) ◽  
pp. 220-228
Author(s):  
Gleb V. Kuptsov ◽  
◽  
Alexei V. Laptev ◽  
Vladimir A. Petrov ◽  
Victor V. Petrov ◽  
...  
Keyword(s):  
High Power ◽  
Thermal Lens ◽  
Active Element ◽  
Diode Pump ◽  
Laser Amplifier ◽  
Power Diode

Research on Discretely Tunable Nd:YAG Ceramic Material

2012 ◽  
Vol 531 ◽  
pp. 133-136
Author(s):  
Lei Li ◽  
Xing Yu Zhang ◽  
Zhao Jun Liu ◽  
Qing Pu Wang ◽  
Xue Bin Wan ◽  
...  
Keyword(s):  
Pump Power ◽  
Ceramic Material ◽  
Nd:Yag Laser ◽  
Laser Source ◽  
Diode Pump ◽  
Average Output

A diode-end-pumped ceramic Nd:YAG laser discretely tunable for five wavelengths was demonstrated. The tunability was obtained by a blazing grating in Littrow mode, and the laser was discretely tuned from 1052 nm to 1073 nm. Under the diode pump power of 4.59 W, the average output powers at five wavelengths were all over 1 W. The laser source may find applications in spectroscopy and metrology.

scholarly journals Thermal lens effect model of Ti:sapphire for use in high-power laser amplifiers

2018 ◽  
Vol 11 (9) ◽  
pp. 092701 ◽  
Author(s):  
Seryeyohan Cho ◽  
Jihoon Jeong ◽  
Seungjin Hwang ◽  
Tae Jun Yu
Keyword(s):  
High Power ◽  
Thermal Lens ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Amplifiers ◽  
Lens Effect ◽  
Effect Model ◽  
Thermal Lens Effect

scholarly journals Compact 50 W All-Solid-State Picosecond Laser System at 1 kHz

2020 ◽  
Vol 10 (19) ◽  
pp. 6891
Author(s):  
Shuaishuai Yang ◽  
Zijian Cui ◽  
Ziming Sun ◽  
Pan Zhang ◽  
Dean Liu
Keyword(s):  
Laser Pulse ◽  
High Power ◽  
Thermal Lens ◽  
Traveling Wave ◽  
Repetition Rate ◽  
Laser System ◽  
Picosecond Laser ◽  
Regenerative Amplifier ◽  
Lens Effect ◽  
Thermal Lens Effect

Compact, stable, high-power and high repetition rate picosecond laser systems are excellent sources for optical parametric chirped pulse amplification systems and laser satellite ranging systems. Compared with the traditional complex high-power amplifier, this article reports a compact high-power picosecond laser system at a repetition rate of 1 kHz based on Nd:YAG bulk crystal. The thermal lens effect limits the regenerative amplifier to directly output higher energy. For this reason, multi-stage traveling-wave amplifiers are usually used to gradually increase the laser pulse energy. So as to achieve a compact structure, a regenerative amplifier that can output higher power at 1 kHz is designed in the laser system. The regenerative amplifier can output the power of 6.5 W at the pump power of 41.5 W; the beam quality of M2 factor was about 1.3. A more flexible thermal depolarization compensation structure is applied in the side-pumped amplifier, which can effectively compensate for thermal lens effect and thermal depolarization at different pump powers. Finally, the laser pulse can achieve an output power higher than 50 W at 1 kHz after passing through an end-pumped traveling-wave amplifier and a side-pumped traveling wave amplifier.

scholarly journals High power continuous-wave 1064 nm DPSS laser for machining semiconductor and metal materials

2013 ◽  
Vol 16 (1) ◽  
pp. 37-47
Author(s):  
Khoa Thanh Nhat Phan ◽  
Chien Mau Dang
Keyword(s):  
Solid State ◽  
Pump Power ◽  
Active Medium ◽  
High Power ◽  
Slope Efficiency ◽  
Continuous Wave ◽  
Laser System ◽  
Anisotropic Crystal ◽  
Diode Pumped ◽  
Metal Materials

A diode-pumped solid-state (DPSSL) laser system with 808 nm laser as pump source has been developed successfully. We used the optically anisotropic crystal Nd:YVO4 as the active medium. The threshold pump power and slope efficiency were measured and discussed. With lowly doped crystal Nd:YVO4 0.27% and concave-plane cavity, the laser showed good performance in the pumping range up to 11 W. Using the 1064 nm beam, micromachining were successfully conducted upon some normal materials such as plastic, wood; some semiconductors such as silicon and metals such as aluminum, copper, steel.

Compact high power Raman laser system using phase-modulated sidebands amplified by a single tapered amplifier

CPEM 2010 ◽  
2010 ◽  
Author(s):  
K. S. Lee ◽  
S. E. Park ◽  
T. Y. Kwon ◽  
S. B. Lee ◽  
J. Kim
Keyword(s):  
High Power ◽  
Laser System ◽  
Raman Laser

scholarly journals Second Harmonic Generation Using an All-Fiber Q-Switched Yb-Doped Fiber Laser and MgO:c-PPLN

2008 ◽  
Vol 2008 ◽  
pp. 1-6 ◽  
Author(s):  
Yi Gan ◽  
Xijia Gu ◽  
Joyce Y. C. Koo ◽  
Wanguo Liang ◽  
Chang-qing Xu
Keyword(s):  
Second Harmonic Generation ◽  
Fiber Laser ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Laser System ◽  
Average Output ◽  
Periodically Poled ◽  
Theoretical Simulation ◽  
Periodically Poled Lithium Niobate ◽  
532 Nm

We have experimentally demonstrated an efficient all-fiber passively Q-switched Yb-doped fiber laser with Samarium doped fiber as a saturable absorber. Average output power of 3.4 W at a repetition rate of 250 kHz and a pulse width of 1.1 microseconds was obtained at a pump power of 9.0 W. By using this fiber laser system and an MgO-doped congruent periodically poled lithium niobate (MgO:c-PPLN), second harmonic generation (SHG) output at 532 nm was achieved at room temperature. The conversion efficiency is around 4.2% which agrees well with the theoretical simulation.

scholarly journals Thermal lens shaping in Brewster gain media: A high-power, diode-pumped Nd:GdVO4 laser

2004 ◽  
Vol 12 (7) ◽  
pp. 1426 ◽  
Author(s):  
N. W. Rimington ◽  
S. L. Schieffer ◽  
W. Andreas Schroeder ◽  
Brian K. Brickeen
Keyword(s):  
High Power ◽  
Thermal Lens ◽  
Diode Pumped ◽  
Power Diode ◽  
Gain Media

ALD anti-reflection coatings at 1ω, 2ω, 3ω, and 4ω for high-power ns-laser application

2018 ◽  
Vol 7 (1-2) ◽  
pp. 23-31 ◽  
Author(s):  
Hao Liu ◽  
Lars Jensen ◽  
Ping Ma ◽  
Detlev Ristau
Keyword(s):  
High Power ◽  
High Surface ◽  
Laser System ◽  
Damage Threshold ◽  
Atomic Layer ◽  
Intensity Difference ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Applications ◽  
Laser Induced Damage

AbstractAtomic layer deposition (ALD) facilitates the deposition of coatings with precise thickness, high surface conformity, structural uniformity, and nodular-free structure, which are properties desired in high-power laser coatings. ALD was studied to produce uniform and stable Al2O3and HfO2single layers and was employed to produce anti-reflection coatings for the harmonics (1ω, 2ω, 3ω, and 4ω) of the Nd:YAG laser. In order to qualify the ALD films for high-power laser applications, the band gap energy, absorption, and element content of single layers were characterized. The damage tests of anti-reflection coatings were carried out with a laser system operated at 1ω, 2ω, 3ω, and 4ω, respectively. The damage mechanism was discussed by analyzing the damage morphology and electric field intensity difference. ALD coatings exhibit stable growth rates, low absorption, and rather high laser-induced damage threshold (LIDT). The LIDT is limited by HfO2as the employed high-index material. These properties indicate the high versatility of ALD films for applications in high-power coatings.

Sign in / Sign up

Export Citation Format

Share Document