Photo-elastic effect, thermal lensing and depolarization ina-cut tetragonal laser crystals

Laser Physics ◽  
2016 ◽  
Vol 26 (6) ◽  
pp. 065002 ◽  
Author(s):  
K V Yumashev ◽  
A N Zakharova ◽  
P A Loiko
Keyword(s):  
Thermal Lensing ◽  
Elastic Effect ◽  
Laser Crystals

On the use of photoelastic effect and plane strain or plane stress approximations for the description of thermal lensing

2016 ◽  
Vol 56 (1) ◽  
Author(s):  
Dominykas Bričkus ◽  
Aleksandr S. Dement’ev
Keyword(s):  
Thermal Effects ◽  
Refractive Index Change ◽  
Optical Power ◽  
Thermal Lensing ◽  
Thermally Induced ◽  
Cubic Crystals ◽  
Photoelastic Effect ◽  
Laser Crystals ◽  
Zero Stresses ◽  
Analytical Relations

Correct use of the photoelastic effect for the description of thermally induced refractive index change is discussed and the analytical relations between thermo-optic coefficients at zero stresses and zero strains are found for all classes of cubic crystals. These relations may be useful for the investigation of thermal effects in very promising sesquioxide class m3 laser crystals. An accepted set of elasto-optical coefficients of the YAG crystal and an alternative one found in the literature were used in numerical simulations. Significant differences in the calculated thermo-optic coefficients and induced birefringence are found using different sets of these coefficients. Misunderstandings related with the so-called photoelastic coefficients are resolved and new expressions for these coefficients are found. It is shown that the incorrect use of these coefficients for different pump beam distributions can lead to significant discrepancies for thermally induced birefringence. It is also shown that common use of the generalized thermo-optic coefficients significantly overestimates the values of optical power of thermal lenses when they are applied to the laser rods with lengths several times longer than their diameter.

Thermo-optic coefficients and thermal lensing in Nd-doped KGd(WO_4)_2 laser crystals

2010 ◽  
Vol 49 (34) ◽  
pp. 6651 ◽  
Author(s):  
Pavel A. Loiko ◽  
Konstantin V. Yumashev ◽  
Nikolai V. Kuleshov ◽  
Anatoly A. Pavlyuk
Keyword(s):  
Thermal Lensing ◽  
Laser Crystals

scholarly journals Energy-transfer upconversion and thermal lensing in high-power end-pumped Nd:YLF laser crystals

1999 ◽  
Vol 35 (4) ◽  
pp. 647-655 ◽  
Author(s):  
P.J. Hardman ◽  
W.A. Clarkson ◽  
G.J. Friel ◽  
M. Pollnau ◽  
D.C. Hanna
Keyword(s):  
Energy Transfer ◽  
High Power ◽  
Thermal Lensing ◽  
Energy Transfer Upconversion ◽  
Laser Crystals

Heat generation and thermal lensing in end-pumped Tm,Ho : YLF laser crystals

2007 ◽  
Vol 40 (22) ◽  
pp. 6930-6935 ◽  
Author(s):  
Xinlu Zhang ◽  
Yuezhu Wang ◽  
Li Li ◽  
Youlun Ju
Keyword(s):  
Heat Generation ◽  
Thermal Lensing ◽  
Laser Crystals

Spectroscopy, modelling and laser operation of holmium doped laser crystals

1994 ◽  
Vol 04 (C4) ◽  
pp. C4-573-C4-577 ◽  
Author(s):  
Y. KALISKY ◽  
S. R. ROTMAN ◽  
G. BOULON ◽  
C. PEDRINI ◽  
A. BRENIER
Keyword(s):  
Laser Operation ◽  
Laser Crystals

An Intuitive Method for the Determination of Crystal-Field Parameters in Laser Crystals

1993 ◽  
Vol 329 ◽  
Author(s):  
Frederick G. Anderson ◽  
H. Weidner ◽  
P. L. Summers ◽  
R. E. Peale ◽  
B. H. T. Chai
Keyword(s):  
Crystal Field ◽  
Irreducible Representations ◽  
Laser Crystals ◽  
Intuitive Method ◽  
Crystal Field Parameters ◽  
Intuitive Interpretation

AbstractExpanding the crystal field in terms of operators that transform as the irreducible representations of the Td group leads to an intuitive interpretation of the crystal-field parameters. We apply this method to the crystal field experienced by Nd3+ dopants in the laser crystals YLiF4, YVO4, and KLiYF5.

A first-order model of thermal lensing of laser propagation in the eye and implications for laser safety

2005 ◽  
Author(s):  
Robert J. Thomas ◽  
Rebecca L. Vincelette ◽  
Gavin D. Buffington ◽  
Amber D. Strunk ◽  
Michael A. Edwards ◽  
...  
Keyword(s):  
Thermal Lensing ◽  
Order Model ◽  
Laser Safety ◽  
First Order ◽  
Laser Propagation

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.

Thermal lensing of high-power edge-pumped YAG slab lasers with undoped edges and Brewster ends

2005 ◽  
Author(s):  
Bin Chen ◽  
Ying Chen ◽  
Jed Simmons ◽  
Tu-Yuan Chung ◽  
Michael Bass
Keyword(s):  
High Power ◽  
Thermal Lensing ◽  
Slab Lasers
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