Spectral Composition of Solid-State Laser Emission and Mode Discrimination by Various Cavity Elements

1973 ◽  
pp. 18-36
Author(s):  
Academician D. V. Skobel’tsyn
Keyword(s):  
Solid State ◽  
Laser Emission ◽  
Spectral Composition ◽  
Solid State Laser ◽  
State Laser ◽  
Mode Discrimination

Fluorene-based polymer gain media for solid-state laser emission across the full visible spectrum

2003 ◽  
Vol 82 (21) ◽  
pp. 3599-3601 ◽  
Author(s):  
Ruidong Xia ◽  
George Heliotis ◽  
Donal D. C. Bradley
Keyword(s):  
Solid State ◽  
Laser Emission ◽  
Visible Spectrum ◽  
Solid State Laser ◽  
State Laser ◽  
Gain Media

scholarly journals 2D high power laser diode arrays for solid-state laser driver inertial fusion energy project

1999 ◽  
Vol 17 (3) ◽  
pp. 427-435 ◽  
Author(s):  
N.G. BASOV ◽  
Yu.M. POPOV ◽  
V.V. BEZOTOSNY ◽  
Kh.Kh. KUMYKOV
Keyword(s):  
Solid State ◽  
Diode Lasers ◽  
Fusion Energy ◽  
Spectral Composition ◽  
Solid State Laser ◽  
Operating Conditions ◽  
Total Power ◽  
State Laser ◽  
Laser Driver ◽  
2D Arrays

2D arrays of laser diodes were developed and investigated under QCW operating conditions. Output power and energy density up to 1 kW/cm2 and 0.45 J/cm2 (at pulse duration 0.5 ms) were measured at the wavelength 810 nm. The spectral composition of radiation, shape of the output pulses, and far-field and near-field radiation zones were examined under various pumping parameters. The kinetics of the temperature profiles in monolithic QCW AlGaAs/GaAs linear bars and 2D arrays, emitting at the wavelength 810 nm was modeled numerically. Quasi-CW and CW operation under various pump parameters were considered as a function of a heat sink design. A calculation model was used to interpret the experimental dependences of the output parameters of the arrays on the pump conditions for application in the solid-state laser driver project. The limit of total power conversion efficiency of diode lasers was analyzed in respect of the threshold current density, series resistance and external differential quantum efficiency. The estimated maximum value of 75% was obtained for the present technological level of the diode lasers production. The corresponding limit of the output optical power density of 2D laser array was defined around 10 kW/cm2.

Hydrothermal Synthesis and Solid-State Laser Refrigeration of Ytterbium-Doped Potassium Lutetium Fluoride (KLF) Microcrystals

2020 ◽  
Author(s):  
Xiaojing Xia ◽  
Anupum Pant ◽  
Xuezhe Zhou ◽  
Elena Dobretsova ◽  
Alex Bard ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Solid State ◽  
Information Science ◽  
Point Group ◽  
Solid State Laser ◽  
Lanthanide Ions ◽  
Group Symmetry ◽  
Luminescence Spectra ◽  
Crystalline Phases ◽  
State Laser

Fluoride crystals, due to their low phonon energies, are attractive hosts of trivalent lanthanide ions for applications in upconverting phosphors, quantum information science, and solid-state laser refrigeration. In this article, we report the rapid, low-cost hydrothermal synthesis of potassium lutetium fluoride (KLF) microcrystals for applications in solid-state laser refrigeration. Four crystalline phases were synthesized, namely orthorhombic K<sub>2</sub>LuF<sub>5</sub> (Pnma), trigonal KLuF<sub>4</sub> (P3<sub>1</sub>21), orthorhombic KLu<sub>2</sub>F<sub>7</sub> (Pna2<sub>1</sub>), and cubic KLu<sub>3</sub>F<sub>10</sub> (Fm3m), with each phase exhibiting unique microcrystalline morphologies. Luminescence spectra and emission lifetimes of the four crystalline phases were characterized based on the point-group symmetry of trivalent cations. Laser refrigeration was measured by observing both the optomechanical eigenfrequencies of microcrystals on cantilevers in vacuum, and also the Brownian dynamics of optically trapped microcrystals in water. Among all four crystalline phases, the most significant cooling was observed for 10%Yb:KLuF<sub>4</sub> with cooling of 8.6 $\pm$ 2.1 K below room temperature. Reduced heating was observed with 10%Yb:K<sub>2</sub>LuF<sub>5</sub>

High Power Laser Diode Arrays for Pumping Solid State Laser and Pumping Characteristics

1996 ◽  
Vol 24 (Supplement) ◽  
pp. 85-88
Author(s):  
H. Kan ◽  
T. Kanzaki ◽  
H. Miyajima ◽  
Y. Ito ◽  
K. Matsui ◽  
...  
Keyword(s):  
Solid State ◽  
Laser Diode ◽  
High Power ◽  
Solid State Laser ◽  
High Power Laser ◽  
Power Laser ◽  
State Laser ◽  
Laser Diode Arrays ◽  
High Power Laser Diode

Efficient diode-pumped solid-state laser at 266 nm

2013 ◽  
Author(s):  
Cheng-Yu Tang ◽  
Yu-Jen Huang ◽  
Kuan-Wei Su ◽  
Yung-Fu Chen
Keyword(s):  
Solid State ◽  
Solid State Laser ◽  
State Laser ◽  
Diode Pumped

High-performance wavelength tuning of a mid-infrared solid-state laser using a resonant diffraction grating

2012 ◽  
Author(s):  
N. Vermeulen ◽  
P. Wasylczyk ◽  
S. Tonchev ◽  
P. Muys ◽  
H. Ottevaere ◽  
...  
Keyword(s):  
Solid State ◽  
Diffraction Grating ◽  
High Performance ◽  
Solid State Laser ◽  
Wavelength Tuning ◽  
Mid Infrared ◽  
State Laser

scholarly journals Adaptive Gradient Estimation Stochastic Parallel Gradient Descent Algorithm for Laser Beam Cleanup

Photonics ◽  
2021 ◽  
Vol 8 (5) ◽  
pp. 165
Author(s):  
Shiqing Ma ◽  
Ping Yang ◽  
Boheng Lai ◽  
Chunxuan Su ◽  
Wang Zhao ◽  
...  
Keyword(s):  
Solid State ◽  
Adaptive Optics ◽  
Gradient Descent ◽  
Solid State Laser ◽  
Gradient Estimation ◽  
State Laser ◽  
Gradient Descent Algorithm ◽  
Stochastic Parallel Gradient Descent ◽  
High Output ◽  
Improved Algorithm

For a high-power slab solid-state laser, obtaining high output power and high output beam quality are the most important indicators. Adaptive optics systems can significantly improve beam qualities by compensating for the phase distortions of the laser beams. In this paper, we developed an improved algorithm called Adaptive Gradient Estimation Stochastic Parallel Gradient Descent (AGESPGD) algorithm for beam cleanup of a solid-state laser. A second-order gradient of the search point was introduced to modify the gradient estimation, and it was introduced with the adaptive gain coefficient method into the classical Stochastic Parallel Gradient Descent (SPGD) algorithm. The improved algorithm accelerates the search for convergence and prevents it from falling into a local extremum. Simulation and experimental results show that this method reduces the number of iterations by 40%, and the algorithm stability is also improved compared with the original SPGD method.

Measurement of thermal effects in solid-state laser gain medium by digital holography

2014 ◽  
Author(s):  
Xiaoyuan Peng ◽  
Yang Yu ◽  
Zhaomin Wang ◽  
Weijuan Qu ◽  
Chee Yuen Cheng ◽  
...  
Keyword(s):  
Solid State ◽  
Thermal Effects ◽  
Digital Holography ◽  
Gain Medium ◽  
Solid State Laser ◽  
State Laser ◽  
Laser Gain
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