Laser action from (B2Σ-X2Σ)HgBr induced by UV laser multiphoton dissociation of HgBr 2 : measurements and experimental results

Corrélation entre possibilité d'effet laser et force oscillatrice de la transition fluorescente : cas des sels de pyrylium

Canadian Journal of Physics ◽

10.1139/p85-029 ◽

1985 ◽

Vol 63 (2) ◽

pp. 191-194 ◽

Cited By ~ 14

Author(s):

Claude Rullière ◽

Alain Declemy ◽

Alexandru T. Balaban

Keyword(s):

Oscillator Strength ◽

Theoretical Calculations ◽

Laser Action ◽

Experimental Results ◽

Quantum Yields ◽

Pyrylium Salts

Laser action is demonstrated to occur in seven pyrylium salts between 4100 and 5100 Å with quantum yields extending from 4% to 12%. Theoretical calculations of the energy and oscillator strength of S0 → Sn transitions confirm band assignments deduced from experimental results. These results allow detection of a weak hidden transition in the 2,6-dimethyl-4-phenyl-pyrylium cation where laser action is not observed. This shows how important the magnitude of the oscillator strength of the first transition S0 → S1 is in selecting candidates to laser action. [Traduit par le journal]

Download Full-text

Boron Particles Production in Nonequilibrium Laser-Chemical Radical Reactions During the IR Multiphoton Dissociation of HCIC=CBCI2H Molecules

Laser Chemistry ◽

10.1155/1989/73481 ◽

1989 ◽

Vol 10 (2) ◽

pp. 81-92 ◽

Cited By ~ 1

Author(s):

G. I. Abdushelishvili ◽

T. G. Abzianidze ◽

A. G. Bakhtadze ◽

P. D. Kervalishvili ◽

G. I. Tkeshelashvili ◽

...

Keyword(s):

Experimental Results ◽

Radical Reactions ◽

Bimolecular Reactions ◽

Elementary Boron ◽

Multiphoton Dissociation ◽

Boron Particles ◽

High Degree ◽

Degree Of Fragmentation

The study of IR MPD of HCIC=CBCI2H molecule by CO2.-laser is presented. We provide experimental results showing high degree of fragmentation of this molecule (down to elementary boron) during nonequilibrium laser induced radical bimolecular reactions.

Download Full-text

Thermal Effect on a CIGS Thin-Film Solar Cell P2 Layer by Using a UV Laser

Advances in Mechanical Engineering ◽

10.1155/2014/723136 ◽

2014 ◽

Vol 6 ◽

pp. 723136 ◽

Cited By ~ 1

Author(s):

Dyi-Cheng Chen ◽

Ming-Fei Chen ◽

Ming-Ren Chen

Keyword(s):

Stainless Steel ◽

Solar Cell ◽

Simulation Analysis ◽

Processing System ◽

Base Plate ◽

Simulation Software ◽

Experimental Results ◽

Uv Laser ◽

Cigs Solar Cell ◽

Laser Apparatus

This study used ANSYS simulation software for analyzing an ultraviolet (UV) (355 nm) laser processing system. The laser apparatus was used in a stainless steel CIGS solar cell P2 layer for simulation analysis. CIGS films process order according to S iO2 layer, molybdenum electrode, CIGS absorbed layer, CdS buffered layer, i-ZnO penetrate light layer, TCO front electrode, MgF resist reflected materials, andelectrode materials. The simulation and experimental results were compared to obtain a laser-delineated P2 laser with a low melting and vaporization temperature. According to the simulation results, the laser function time was 135 μs, the UV laser was 0.5 W, and the P2 layer thin films were removed. The experimental results indicated that the electrode pattern of the experiment was similar to that of the simulation result, and the laser process did not damage the base plate. The analysis results confirm that the laser apparatus is effective when applied to a stainless steel CIGS solar cell P2 layer.

Download Full-text

On the Development of New VUV and UV Solid State Laser Sources for Photochemical Applications

Laser Chemistry ◽

10.1155/1993/75972 ◽

1993 ◽

Vol 13 (2) ◽

pp. 143-150 ◽

Cited By ~ 21

Author(s):

A. C. Cefalas ◽

M. A. Dubinskii ◽

E. Sarantopoulou ◽

R. Yu. Abdulsabirov ◽

S. L. Korableva ◽

...

Keyword(s):

Solid State ◽

Fluorescence Spectrum ◽

Uv Radiation ◽

Laser Action ◽

Solid State Laser ◽

Uv Laser ◽

Pulsed Discharge ◽

Molecular Laser ◽

New Class ◽

Laser Sources

Laser action in the VUV and UV region of the spectrum at 172 nm and at 260 nm had been obtained from LaF3:Nd3+and LiYF4:Nd3+ crystals respectively when they were pumped with an F2 pulsed discharge molecular laser at 157 nm. The fluorescence spectrum of LiYF4:HO3+ monocrystals using the same pumping source has been obtained as well and it suggests that this crystal can be used for generating tunable coherent VUV and UV radiation. This finding opens new prospects for the development of a new class of solid state VUV and UV laser sources for photochemical applications.

Download Full-text

Experimental results of UV laser cleaning on a silver Carlino coin

Radiation Effects and Defects in Solids ◽

10.1080/10420151003729524 ◽

2010 ◽

Vol 165 (6-10) ◽

pp. 643-651 ◽

Cited By ~ 5

Author(s):

A. Buccolieri ◽

G. Buccolieri ◽

A. Castellano ◽

A. Lorusso ◽

V. Nassisi

Keyword(s):

Laser Cleaning ◽

Experimental Results ◽

Uv Laser

Download Full-text

Mechanism of UV laser action on arterial wall

10.1117/12.275476 ◽

1997 ◽

Author(s):

Sergey V. Mel'chenko ◽

Sergei E. Kunts ◽

Katherine D. Mel'chenko ◽

Eleonora V. Saprykina ◽

Vladimir M. Shipulin ◽

...

Keyword(s):

Arterial Wall ◽

Laser Action ◽

Uv Laser

Download Full-text

Photophysical mechanism of UV laser action: the role of stress transients

10.1117/12.242154 ◽

1996 ◽

Cited By ~ 6

Author(s):

Nikita M. Bityurin ◽

Aleksey Y. Malyshev ◽

Boris S. Luk'yanchuk ◽

Sergei I. Anisimov ◽

Dieter Baeuerle

Keyword(s):

Laser Action ◽

Uv Laser

Download Full-text

Formation of Periodic Nanoridge Patterns by Ultrashort Single Pulse UV Laser Irradiation of Gold

Nanomaterials ◽

10.3390/nano10101998 ◽

2020 ◽

Vol 10 (10) ◽

pp. 1998 ◽

Cited By ~ 1

Author(s):

Andreas Blumenstein ◽

Martin E. Garcia ◽

Baerbel Rethfeld ◽

Peter Simon ◽

Jürgen Ihlemann ◽

...

Keyword(s):

Pulse Length ◽

Single Pulse ◽

Gold Surface ◽

Laser Wavelength ◽

Experimental Results ◽

Uv Laser ◽

Gold Target ◽

Transmission Electron ◽

Periodic Intensity ◽

Spatially Periodic

A direct comparison of simulation and experimental results of UV laser-induced surface nanostructuring of gold is presented. Theoretical simulations and experiments are performed on an identical spatial scale. The experimental results have been obtained by using a laser wavelength of 248 nm and a pulse length of 1.6 ps. A mask projection setup is applied to generate a spatially periodic intensity profile on a gold surface with a sinusoidal shape and periods of 270 nm, 350 nm, and 500 nm. The formation of structures at the surface upon single pulse irradiation is analyzed by scanning and transmission electron microscopy (SEM and TEM). For the simulations, a hybrid atomistic-continuum model capable of capturing the essential mechanisms responsible for the nanostructuring process is used to model the interaction of the laser pulse with the gold target and the subsequent time evolution of the system. The formation of narrow ridges composed of two colliding side walls is found in the simulation as well as in the experiment and the structures generated as a result of the material processing are categorized depending on the range of applied fluencies and periodicities.

Download Full-text