Diode-end-pumped, passively Q-switched, dual-wavelength, Nd:YAG crystal laser with monolayer graphene as saturable absorber operating at 1319 and 1338 nm

2016 ◽  
Vol 94 (4) ◽  
pp. 389-392 ◽  
Author(s):  
Shang Gao
Keyword(s):  
Pulse Duration ◽  
Nd:Yag Laser ◽  
Repetition Rate ◽  
Peak Power ◽  
Maximum Output Power ◽  
Monolayer Graphene ◽  
Maximum Output ◽  
Crystal Laser ◽  
First Time ◽  
Nd:Yag Crystal

A diode-end-pumped, passively Q-switched, Nd:YAG laser with a monolayer graphene as saturable absober simultaneously emitting at 1319 and 1338 nm was demonstrated for the first time. The maximum output power, the minimum pulse duration and the highest repetition rate were 586 mW, 317 ns, and 102 kHz, respectively. The corresponding peak power was about 18.1 W.

scholarly journals Passively Q-Switched Yb:CALGO Laser Based on Mo:BiVO4 Absorber

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2364
Author(s):  
Lina Zhao ◽  
Ye Yuan ◽  
Luyang Tong ◽  
Wenyu Zhang ◽  
Zhongshuai Zhang ◽  
...  
Keyword(s):  
Repetition Rate ◽  
Peak Power ◽  
Near Infrared ◽  
Maximum Output Power ◽  
Single Pulse ◽  
Infrared Region ◽  
Maximum Output ◽  
Linear Absorption ◽  
Central Wavelength ◽  
Transmission Electron

A stable, passively Q-switched Yb:CaGdAlO4 laser based on Mo:BiVO4 saturable absorber was demonstrated. Close observations of the structure and morphology of the nanoparticles by using transmission electron microscope, Raman spectrum and linear absorption were measured. The nonlinear transmission of Mo:BiVO4 was characterized by a 30 ps laser with a central wavelength of 1064 nm and a repetition rate of 10 Hz. The experimental maximum output power of the pulsed laser was 510 mW with a repetition rate of 87 kHz and pulse width of 3.18 μs, corresponding to a peak power of 1.84 W and a single pulse energy of 5.8 μJ. The experimental results indicate that Mo:BiVO4-SA is a great candidate for passively Q-switched lasers in the near infrared region.

scholarly journals β-Ga2O3 Used as a Saturable Sbsorber to Realize Passively Q-Switched Laser Output

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1501
Author(s):  
Baizhong Li ◽  
Qiudi Chen ◽  
Peixiong Zhang ◽  
Ruifeng Tian ◽  
Lu Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Peak Power ◽  
Maximum Output Power ◽  
Output Coupling ◽  
Maximum Output ◽  
Floating Zone ◽  
Center Wavelength ◽  
Maximum Pulse Energy ◽  
First Time ◽  
State 1

β-Ga2O3 crystals have attracted great attention in the fields of photonics and photoelectronics because of their ultrawide band gap and high thermal conductivity. Here, a pure β-Ga2O3 crystal was successfully grown by the optical floating zone (OFZ) method, and was used as a saturable absorber to realize a passively Q-switched all-solid-state 1 μm laser for the first time. By placing the as-grown β-Ga2O3 crystal into the resonator of the Nd:GYAP solid-state laser, Q-switched pulses at the center wavelength of 1080.4 nm are generated under a output coupling of 10%. The maximum output power is 191.5 mW, while the shortest pulse width is 606.54 ns, and the maximum repetition frequency is 344.06 kHz. The maximum pulse energy and peak power are 0.567 μJ and 0.93 W, respectively. Our experimental results show that the β-Ga2O3 crystal has great potential in the development of an all-solid-state 1 μm pulsed laser.

LD-pumped high-power continuous-wave Pr3+:YLF deep red lasers at 718.5 and 720.8 nm

Laser Physics ◽  
2021 ◽  
Vol 32 (2) ◽  
pp. 025801
Author(s):  
Xiangrui Liu ◽  
Zhuang Li ◽  
Chengkun Shi ◽  
Bo Xiao ◽  
Run Fang ◽  
...  
Keyword(s):  
Output Power ◽  
High Power ◽  
Slope Efficiency ◽  
Laser Emission ◽  
Continuous Wave ◽  
Optical Glass ◽  
Maximum Output Power ◽  
Glass Plate ◽  
Maximum Output ◽  
First Time

Abstract We demonstrated 22 W LD-pumped high-power continuous-wave (CW) deep red laser operations at 718.5 and 720.8 nm based on an a-cut Pr3+:YLF crystal. The output power of both polarized directions reached the watt-level without output power saturation. A single wavelength laser operated at 720.8 nm in the π-polarized direction was achieved, with a high output power of 4.5 W and high slope efficiency of approximately 41.5%. To the best of our knowledge, under LD-pumped conditions, the laser output power and slope efficiency are the highest at 721 nm. By using a compact optical glass plate as an intracavity etalon, we suppressed the π-polarized 720.8 nm laser emission. And σ-polarized single-wavelength laser emission at 718.5 nm was achieved, with a maximum output power of 1.45 W and a slope efficiency of approximately 17.8%. This is the first time that we have achieved the σ-polarized laser emission at 718.5 nm generated by Pr3+:YLF lasers.

High repetition rate, high peak power acousto-optical Q-switched 946 nm Nd:YAG laser

Laser Physics ◽  
2010 ◽  
Vol 20 (9) ◽  
pp. 1783-1786 ◽  
Author(s):  
X. Yu ◽  
C. Wang ◽  
F. Chen ◽  
R. P. Yan ◽  
X. D. Li ◽  
...  
Keyword(s):  
Nd:Yag Laser ◽  
Repetition Rate ◽  
Peak Power ◽  
High Repetition Rate ◽  
High Peak ◽  
High Peak Power ◽  
High Repetition

scholarly journals Analysis of Power Loss for Crystalline Silicon Solar Module during the Course of Encapsulation

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Hong Yang ◽  
He Wang ◽  
Dingyue Cao ◽  
Dangmin Sun ◽  
Xiaobao Ju
Keyword(s):  
Output Power ◽  
Power Loss ◽  
Crystalline Silicon ◽  
Maximum Output Power ◽  
Total Power ◽  
Maximum Output ◽  
Solar Module ◽  
In Series ◽  
Encapsulation Process ◽  
First Time

During the course of solar module encapsulation, the output power of crystalline silicon solar module is less than the sum of the maximum output power of the constituents because of power loss. So it is very important to investigate the power loss caused by encapsulation materials and module production process. In this paper, the power loss of crystalline silicon solar module is investigated by experiments systematically for the first time. It is found that the power loss is mainly caused by the resistance of ribbon and mismatch of solar cells; the total power loss is as high as 3.93% for solar module composed of 72 cells (125 mm × 125 mm) connected in series. Analyzing and reducing the power losses are beneficial to optimizing encapsulation process for the solar module. The results presented in this study give out a direction to decreasing power loss and optimizing encapsulation process of crystalline silicon solar module.

scholarly journals β-Ga2O3 Used as a Saturable Absorber to Realize Passively Q-Switched Laser Output

2021 ◽  
Author(s):  
Baizhong Li ◽  
Qiudi Chen ◽  
Peixiong Zhang ◽  
Ruifeng Tian ◽  
Lu Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Maximum Output Power ◽  
Wide Band ◽  
Output Coupling ◽  
Maximum Output ◽  
Wide Band Gap ◽  
Saturable Absorbers ◽  
Maximum Pulse Energy ◽  
First Time ◽  
State 1

β-Ga2O3 crystal have attracted great attentions in the fields of photonics and photoelectronics because of its ultra wide-band gap and high thermal conductivity. Here, pure β-Ga2O3 crystal was successfully grown by optical floating zone (OFZ) method, and used as saturable absorbers to realize a passively Q-switched all-solid-state 1μm laser for the first time. By placing the as-grown β-Ga2O3 crystal into the resonator of Nd:GYAP solid-state laser, a Q-switched pulses at the center wavelength of 1080.4 nm are generated under a output coupling of 10%. The maximum output power is 191.5 mW while the shortest pulse width is 606.54 ns, and the maximum repetition frequency is 344.06 kHz. The maximum pulse energy and peak power are 0.567 μJ and 0.93 W, respectively. Our experimental results show that β-Ga2O3 crystal has great potential in the development of all-solid-state 1μm pulsed laser.

scholarly journals Two-micron all-fiberized passively mode-locked fiber lasers with high-energy nanosecond pulse

2020 ◽  
Vol 8 ◽  
Author(s):  
Meng Wang ◽  
Yijian Huang ◽  
Zongpeng Song ◽  
Jincheng Wei ◽  
Jihong Pei ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Pulse Duration ◽  
Output Power ◽  
Saturable Absorber ◽  
Pulse Energy ◽  
Fiber Lasers ◽  
Maximum Output Power ◽  
High Energy ◽  
Maximum Output ◽  
Stable Mode

We report on mode-locked thulium-doped fiber lasers with high-energy nanosecond pulses, relying on the transmission in a semiconductor saturable absorber (SESA) and a carbon nanotube (CNTs-PVA) film separately. A section of an SMF–MMF–SMF structure multimode interferometer with a transmission peak wavelength of ∼2003 nm was used as a wavelength selector to fix the laser wavelength. When the SESA acted as a saturable absorber (SA), the mode-locked fiber laser had a maximum output power of ∼461 mW with a pulse energy of ∼0.14 μJ and a pulse duration of ∼9.14 ns. In a CNT-film-based mode-locked fiber laser, stable mode-locked pulses with the maximum output power of ∼46 mW, pulse energy of ∼26.8 nJ and pulse duration of ∼9.3 ns were obtained. To the best of our knowledge, our experiments demonstrated the first 2 μm region ‘real’ SA-based dissipative soliton resonance with the highest mode-locked pulse energy from a ‘real’ SA-based all-fiberized resonator.

scholarly journals High-repetition-rate and high-power picosecond regenerative amplifier based on a single bulk Nd:GdVO4 crystal

2019 ◽  
Vol 7 ◽  
Author(s):  
Jie Guo ◽  
Wei Wang ◽  
Hua Lin ◽  
Xiaoyan Liang
Keyword(s):  
Output Power ◽  
High Power ◽  
Repetition Rate ◽  
Beam Quality ◽  
Maximum Output Power ◽  
High Repetition Rate ◽  
Maximum Output ◽  
Bifurcation Instability ◽  
Regenerative Amplifier ◽  
High Repetition

We report on a high-repetition-rate, high-power continuously pumped Nd:GdVO4 regenerative amplifier. Numerical simulations successfully pinpoint the optimum working point free of bifurcation instability with simultaneous efficient energy extraction. At a repetition rate of 100 kHz, a maximum output power of 23 W was obtained with a pulse duration of 27 ps, corresponding to a pulse energy of $230~\unicode[STIX]{x03BC}\text{J}$ . The system displayed an outstanding stability with a root mean square power noise as low as 0.3%. The geometry of the optical resonator and the pumping scheme enhanced output power in the $\text{TEM}_{00}$ mode with a single bulk crystal. Accordingly, nearly diffraction-limited beam quality was produced with $M^{2}\approx 1.2$ at full pump power.

scholarly journals 1.34 µm Q-Switched Nd:YVO4 Laser with a Reflective WS2 Saturable Absorber

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1200 ◽  
Author(s):  
Taijin Wang ◽  
Yonggang Wang ◽  
Jiang Wang ◽  
Jing Bai ◽  
Guangying Li ◽  
...  
Keyword(s):  
Solid State ◽  
Saturable Absorber ◽  
Pulse Width ◽  
Maximum Output Power ◽  
Laser Pulses ◽  
Solid State Laser ◽  
Maximum Output ◽  
Langmuir Blodgett ◽  
Short Laser Pulses ◽  
First Time

In this work, a Tungsten disulfide (WS2) reflective saturable absorber (SA) fabricated using the Langmuir–Blodgett technique was used in a solid state Nd:YVO4 laser operating at 1.34 µm. A Q-switched laser was constructed. The shortest pulse width was 409 ns with the repetition rate of 159 kHz, and the maximum output power was 338 mW. To the best of our knowledge, it is the first time that short laser pulses have been generated in a solid state laser at 1.34 µm using a reflective WS2 SA fabricated by the Langmuir–Blodgett method.

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.

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