Femtosecond fiber oscillator with adjustable central wavelength and bandwidth optimized for high power amplification

2021 ◽  
Author(s):  
Gizem Alpakut ◽  
Burcin Unlu ◽  
Seydi Yavas
Keyword(s):  
High Power ◽  
Central Wavelength ◽  
Power Amplification

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.

High power amplification of tunable optically carried RF signals by a diode pumped Yb3+doped LMA silicon fiber

2015 ◽  
Vol 12 (3) ◽  
pp. 035101 ◽  
Author(s):  
Tao He ◽  
Suhui Yang ◽  
Changming Zhao ◽  
Haiyang Zhang ◽  
Yinglei Liang ◽  
...  
Keyword(s):  
High Power ◽  
Power Amplification ◽  
Rf Signals ◽  
Diode Pumped

scholarly journals Investigation on extreme frequency shift in silica fiber-based high-power Raman fiber laser

2018 ◽  
Vol 6 ◽  
Author(s):  
Jiaxin Song ◽  
Hanshuo Wu ◽  
Jun Ye ◽  
Hanwei Zhang ◽  
Jiangming Xu ◽  
...  
Keyword(s):  
Frequency Shift ◽  
Fiber Laser ◽  
High Power ◽  
High Efficiency ◽  
Maximum Output Power ◽  
Gain Medium ◽  
Maximum Output ◽  
Optical Efficiency ◽  
Central Wavelength ◽  
Raman Fiber Laser

In this paper, we experimentally investigated the extreme frequency shift in high-power Raman fiber laser (RFL). The RFL was developed by using a pair of fiber Bragg gratings with fixed and matched central wavelength (1120 nm) combined with a piece of 31-m-long polarization maintaining (PM) passive fiber adopted as Raman gain medium. The pump source was a homemade high-power, linearly polarized (LP) wavelength-tunable master oscillator power amplifier (MOPA) source with ${\sim}25~\text{nm}$ tunable working range (1055–1080 nm). High-power and high-efficiency RFL with extreme frequency shift between the pump and Stokes light was explored. It is found that frequency shift located within 10.6 THz and 15.2 THz can ensure efficient Raman lasing, where the conversion efficiency is more than 95% of the maximal value, 71.3%. In addition, a maximum output power of 147.1 W was obtained with an optical efficiency of 71.3%, which is the highest power ever reported in LP RFLs to the best of our knowledge.

Linearity Aspects of High Power Amplification in GaN Transistors

2019 ◽  
pp. 83-107
Author(s):  
Samuel James Bader ◽  
Keisuke Shinohara ◽  
Alyosha Molnar
Keyword(s):  
High Power ◽  
Power Amplification

Studies of central wavelength of high-power all-fiber superfluorescent sources with Yb-doped double-clad fibers

2016 ◽  
Vol 380 ◽  
pp. 250-259 ◽  
Author(s):  
Ping Yan ◽  
Junyi Sun ◽  
Dan Li ◽  
Mali Gong ◽  
Qirong Xiao
Keyword(s):  
High Power ◽  
Central Wavelength

Amplified spontaneous emission and power amplification in high-power DF laser systems

2010 ◽  
Vol 8 (8) ◽  
pp. 764-767 ◽  
Author(s):  
陈星 Xing Chen ◽  
刘文广 Wenguang Liu ◽  
姜宗福 Zongfu Jiang
Keyword(s):  
Spontaneous Emission ◽  
High Power ◽  
Amplified Spontaneous Emission ◽  
Power Amplification ◽  
Laser Systems

High-power amplification of femtosecond optical pulses in a diode-pumped fiber system

1994 ◽  
Vol 19 (16) ◽  
pp. 1201 ◽  
Author(s):  
A. Galvanauskas ◽  
M. E. Fermann ◽  
D. Harter
Keyword(s):  
High Power ◽  
Optical Pulses ◽  
Fiber System ◽  
Power Amplification ◽  
Diode Pumped

Mode-Locked Composite YAG/Yb:YAG Ceramic Laser and High-Power Amplification

2016 ◽  
Vol 28 (4) ◽  
pp. 433-436 ◽  
Author(s):  
Chao Wang ◽  
Wenxue Li ◽  
Dongbi Bai ◽  
Jian Zhao ◽  
Jiang Li ◽  
...  
Keyword(s):  
High Power ◽  
Power Amplification ◽  
Ceramic Laser
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