scholarly journals Self-frequency-doubling Yb:CNGS lasers operating in the femtosecond regime

2020 ◽  
Vol 37 (10) ◽  
pp. 2822
Author(s):  
Maciej Kowalczyk ◽  
Xuzhao Zhang ◽  
Valentin Petrov ◽  
Pavel Loiko ◽  
Xavier Mateos ◽  
...  
Keyword(s):  
Frequency Doubling ◽  
Femtosecond Regime

3.0 W blue light generation by frequency doubling of broad area semiconductor amplifier emission

1993 ◽  
Vol 29 (1) ◽  
pp. 77-78 ◽  
Author(s):  
L.E. Busse ◽  
L. Goldberg ◽  
D. Mehuys ◽  
G. Mizell
Keyword(s):  
Blue Light ◽  
Frequency Doubling ◽  
Broad Area ◽  
Light Generation

scholarly journals Multifunctional Optical Crystals for All-Solid-State Raman Lasers

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 114
Author(s):  
Hui Zhao ◽  
Shibo Dai ◽  
Siqi Zhu ◽  
Hao Yin ◽  
Zhen Li ◽  
...  
Keyword(s):  
Solid State ◽  
Continuous Wave ◽  
Frequency Doubling ◽  
Raman Laser ◽  
Rare Earth Ions ◽  
Excellent Performance ◽  
The Past ◽  
Raman Lasers ◽  
Optical Crystals ◽  
Laser Crystals

In the past few decades, the multifunctional optical crystals for all-solid-state Raman lasers have been widely studied by many scholars due to their compactness, convenience and excellent performance. In this review, we briefly show two kinds of multifunctional Raman crystals: self-Raman (laser and Raman effects) crystals and self-frequency-doubled Raman (frequency-doubling and Raman effects) crystals. We firstly introduce the properties of the self-Raman laser crystals, including vanadate, tungstate, molybdate and silicate doped with rare earth ions, as well as self-frequency-doubled Raman crystals, including KTiOAsO4 (KTA) and BaTeMo2O9 (BTM). Additionally, the domestic and international progress in research on multifunctional Raman crystals is summarized in the continuous wave, passively Q-switched, actively Q-switched and mode-locked regimes. Finally, we present the bottleneck in multifunctional Raman crystals and the outlook for future development. Through this review, we contribute to a general understanding of multifunctional Raman crystals.

scholarly journals Analysis of the Influence of Different Bionic Structures on the Noise Reduction Performance of the Centrifugal Pump

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 886
Author(s):  
Cui Dai ◽  
Chao Guo ◽  
Yiping Chen ◽  
Liang Dong ◽  
Houlin Liu
Keyword(s):  
Flow Field ◽  
Noise Reduction ◽  
Centrifugal Pump ◽  
Great Influence ◽  
Frequency Doubling ◽  
Sound Field ◽  
Internal Flow ◽  
Test System ◽  
Centrifugal Pumps ◽  
External Characteristics

The strong noise generated during the operation of the centrifugal pump harms the pump group and people. In order to decrease the noise of the centrifugal pump, a specific speed of 117.3 of the centrifugal pump is chosen as a research object. The bionic modification of centrifugal pump blades is carried out to explore the influence of different bionic structures on the noise reduction performance of centrifugal pumps. The internal flow field and internal sound field of bionic blades are studied by numerical calculation and test methods. The test is carried out on a closed pump test platform which includes external characteristics and a flow noise test system. The effects of two different bionic structures on the external characteristics, acoustic amplitude–frequency characteristics and flow field structure of a centrifugal pump, are analyzed. The results show that the pit structure has little influence on the external characteristic parameters, while the sawtooth structure has a relatively great influence. The noise reduction effect of the pit structure is aimed at the wide-band noise, while the sawtooth structure is aimed at the discrete noise of the blade-passing frequency (BPF) and its frequency doubling. The noise reduction ability of the sawtooth structure is not suitable for high-frequency bands.

CW Nd:MgO:LiNbO/sub 3/ self-frequency-doubling laser at room temperature

1993 ◽  
Vol 29 (9) ◽  
pp. 2419-2420 ◽  
Author(s):  
Ruining Li ◽  
Changde Xie ◽  
Junmin Wang ◽  
Xiaoyan Liang ◽  
Kunchi Peng ◽  
...  
Keyword(s):  
Room Temperature ◽  
Frequency Doubling

Frequency-Doubling In Glass Fibers

1988 ◽  
Author(s):  
Walter Margulis ◽  
Ulf Osterberg
Keyword(s):  
Glass Fibers ◽  
Frequency Doubling
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