scholarly journals Laser Operation of Tm: LuAG Single-Crystal Fiber Grown by the Micro-Pulling down Method

Crystals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 898
Author(s):  
Jian Liu ◽  
Jifei Dong ◽  
Yinyin Wang ◽  
Hangqi Yuan ◽  
Qingsong Song ◽  
...  
Keyword(s):  
Single Crystals ◽  
Ray Tracing ◽  
Intensity Distribution ◽  
Continuous Wave ◽  
Beam Quality ◽  
Pump Intensity ◽  
Laser Operation ◽  
Quality Factors ◽  
Continuous Wave Output Power ◽  
Crystal Fiber

Single crystals fiber (SCF) of LuAG doped with 2.0 at.% thulium has been grown by using micro-pulling down (µ-PD) technique. A continuous-wave output power of 2.44 W was achieved with a slope efficiency of 11.7% using a 783-nm diode laser as pump source. The beam quality factors M2 were 1.14 and 1.67 in the x and y directions, respectively. This is, to the best of our knowledge, the first report on the Tm:LuAG SCF laser. Using ray tracing analysis, the influence of laser performance by the pump intensity distribution in the SCF was also studied.

Yb3+-doped large-mode-area photonic crystal fiber laser with 210 W continuous-wave output power

2009 ◽  
Vol 54 (20) ◽  
pp. 3670-3673 ◽  
Author(s):  
JianFeng Li ◽  
KaiLiang Duan ◽  
YongZhi Liu ◽  
ZhiYong Dai ◽  
ZhongHua Ou ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Fiber Laser ◽  
Output Power ◽  
Photonic Crystal Fiber ◽  
Continuous Wave ◽  
Continuous Wave Output Power ◽  
Large Mode Area ◽  
Crystal Fiber ◽  
Mode Area

Growth, spectra and continuous-wave 2.1 μm laser operation of Ho3+-doped bismuth silicate crystal

CrystEngComm ◽  
2022 ◽  
Author(s):  
Yan Zhang ◽  
Zhen Gong ◽  
Xiaoming Duan ◽  
Junping Yuan ◽  
Jiayue Xu ◽  
...  
Keyword(s):  
Single Crystals ◽  
Continuous Wave ◽  
Spectroscopic Properties ◽  
Bridgman Method ◽  
Laser Operation ◽  
Laser Transition ◽  
Bismuth Silicate

Single crystals of Ho3+-doped bismuth silicate (BSO) were grown by the modified Bridgman method. The spectroscopic properties for 2 μm laser transition via the 5I7  5I8 transition were investigated...

Efficient laser operation and continuous-wave diode pumping of Cr2+:ZnSe single crystals

2001 ◽  
Vol 72 (2) ◽  
pp. 253-255 ◽  
Author(s):  
A.V. Podlipensky ◽  
V.G. Shcherbitsky ◽  
N.V. Kuleshov ◽  
V.I. Levchenko ◽  
V.N. Yakimovich ◽  
...  
Keyword(s):  
Single Crystals ◽  
Continuous Wave ◽  
Diode Pumping ◽  
Laser Operation

scholarly journals 35 W continuous-wave Ho:YAG single-crystal fiber laser

2020 ◽  
Vol 8 ◽  
Author(s):  
Yongguang Zhao ◽  
Li Wang ◽  
Weidong Chen ◽  
Jianlei Wang ◽  
Qingsong Song ◽  
...  
Keyword(s):  
Single Crystal ◽  
Fiber Laser ◽  
Output Power ◽  
High Power ◽  
Slope Efficiency ◽  
Continuous Wave ◽  
Propagation Loss ◽  
Continuous Wave Output Power ◽  
High Brightness ◽  
Crystal Fiber

We report on a high-power Ho:YAG single-crystal fiber (SCF) laser inband pumped by a high-brightness Tm-fiber laser at 1908 nm. The Ho:YAG SCF grown by the micro-pulling-down technique exhibits a propagation loss of $0.05\pm 0.005~\text{cm}^{-1}$ at $2.09~\unicode[STIX]{x03BC}\text{m}$ . A continuous-wave output power of 35.2 W is achieved with a slope efficiency of 42.7%, which is to the best of our knowledge the highest power ever reported from an SCF-based laser in the 2 $\unicode[STIX]{x03BC}\text{m}$ spectral range.

Laser diode end-pumped continuous-wave laser operation at 1339 nm in Nd : GGG with nearly diffraction-limited beam quality

Laser Physics ◽  
2015 ◽  
Vol 25 (8) ◽  
pp. 085003
Author(s):  
Zhi Lin ◽  
Yi Wang ◽  
Bin Xu ◽  
Yongjie Cheng ◽  
Nan Chen ◽  
...  
Keyword(s):  
Laser Diode ◽  
Continuous Wave ◽  
Beam Quality ◽  
Laser Operation ◽  
Continuous Wave Laser ◽  
Wave Laser

scholarly journals 202 W dual-end-pumped Tm:YLF laser with a VBG as an output coupler

2021 ◽  
Vol 9 ◽  
Author(s):  
Disheng Wei ◽  
Shuyi Mi ◽  
Ke Yang ◽  
Junhui Li ◽  
Jinwen Tang ◽  
...  
Keyword(s):  
Output Coupler ◽  
Heat Dissipation ◽  
Continuous Wave ◽  
Beam Quality ◽  
Quality Factors ◽  
Central Wavelength ◽  
Microchannel Cooling ◽  
Increasing Temperature ◽  
Tm:Ylf Laser ◽  
Total Shift

Abstract We demonstrated a 202 W Tm:YLF slab laser using a reflecting volume Bragg grating (VBG) as an output coupler at room temperature. Two kinds of active heat dissipation methods were used for the VBG to suppress the shift of wavelength caused by its increasing temperature. The maximum continuous wave (CW) output power of 202 W using the microchannel cooling was obtained under the total incident pump power of 553 W, the corresponding slope efficiency and optical-to-optical conversion efficiency were 39.7% and 36.5%, respectively. The central wavelength was 1908.5 nm with the linewidth (full width at half maximum) of 0.57 nm. Meanwhile, with the laser output increasing from 30 to 202 W, the total shift was about 1.0 nm, and the wavelength was limited to two water absorption lines near 1908 nm. The beam quality factors M2 were measured to be 2.3 and 4.0 in x and y directions at 202 W.

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.

scholarly journals Ytterbium-doped large-core fiber laser with 1 kW continuous-wave output power

2004 ◽  
Author(s):  
Y. Jeong ◽  
J. K. Sahu ◽  
D. N. Payne ◽  
J. Nilsson
Keyword(s):  
Fiber Laser ◽  
Output Power ◽  
Continuous Wave ◽  
Large Core ◽  
Continuous Wave Output Power ◽  
Core Fiber

Continuous-wave laser operation of chromium-doped forsterite

1989 ◽  
Vol 14 (12) ◽  
pp. 612 ◽  
Author(s):  
V. Petričević ◽  
S. K. Gayen ◽  
R. R. Alfano
Keyword(s):  
Continuous Wave ◽  
Laser Operation ◽  
Continuous Wave Laser ◽  
Wave Laser

25 W continuous-wave Yb:LiLuF4 single-crystal-fiber laser oscillator

2021 ◽  
pp. 127337
Author(s):  
Sara Pizzurro ◽  
Federico Pirzio ◽  
Shu Jun ◽  
Alberto Di Lieto ◽  
Giuliano Piccinno ◽  
...  
Keyword(s):  
Single Crystal ◽  
Fiber Laser ◽  
Continuous Wave ◽  
Laser Oscillator ◽  
Crystal Fiber
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