Green light laser exposure at 532 nm near the exposure limit during a human volunteer vehicle driving task does not alter structure or function in the visual system

2014 ◽  
Vol 26 (2) ◽  
pp. 022009
Author(s):  
Zhaohua Yu ◽  
Rolf Persson ◽  
Johan Öhgren ◽  
Stig Sandberg ◽  
Ulf Hörberg ◽  
...  
Keyword(s):  
Visual System ◽  
Green Light ◽  
Human Volunteer ◽  
Laser Exposure ◽  
Exposure Limit ◽  
Green Light Laser ◽  
Driving Task ◽  
532 Nm

scholarly journals High-Efficiency Intracavity Continuous-Wave Green-Light Generation by Quasiphase Matching in a Bulk Periodically Poled MgO:LiNbO3 Crystal

2008 ◽  
Vol 2008 ◽  
pp. 1-4 ◽  
Author(s):  
Shaowei Chu ◽  
Ying Zhang ◽  
Bin Wang ◽  
Yong Bi
Keyword(s):  
High Efficiency ◽  
Continuous Wave ◽  
Green Light ◽  
Frequency Doubling ◽  
Green Laser ◽  
Periodically Poled ◽  
Output Stability ◽  
532 Nm ◽  
Better Than ◽  
Quasiphase Matching

908 mW of green light at 532 nm were generated by intracavity quasiphase matching in a bulk periodically poled MgO:LiNbO3 (PPMgLN) crystal. A maximum optical-to-optical conversion efficiency of 33.5% was obtained from a 0.5 mm thick, 10 mm long, and 5 mol% MgO:LiNbO3 crystal with an end-pump power of 2.7 W at 808 nm. The temperature bandwidth between the intracavity and single-pass frequency doubling was found to be different for the PPMgLN. Reliability and stability of the green laser were evaluated. It was found that for continuous operation of 100 hours, the output stability was better than 97.5% and no optical damage was observed.

Perioperative major acute cardiovascular events after 180-watt Green Light laser photoselective vaporization

2018 ◽  
Vol 17 (2) ◽  
pp. e180-e182
Author(s):  
M. Marchioni ◽  
L. Cindolo ◽  
C. De Nunzio ◽  
F. Greco ◽  
P. Destefanis ◽  
...  
Keyword(s):  
Cardiovascular Events ◽  
Green Light ◽  
Photoselective Vaporization ◽  
Green Light Laser

scholarly journals Phase-Shift Optimization in AA/PVA Photopolymers by High-Frequency Pulsed Laser

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1887
Author(s):  
Daniel Puerto ◽  
Sergi Gallego ◽  
Jorge Francés ◽  
Andrés Márquez ◽  
Inmaculada Pascual ◽  
...  
Keyword(s):  
Phase Shift ◽  
High Frequency ◽  
Large Scale ◽  
Pulsed Laser ◽  
Laser Exposure ◽  
Continuous Laser ◽  
Frequency Limit ◽  
Optical Elements ◽  
First Time ◽  
532 Nm

Photopolymers can be used to fabricate different holographic optical elements, although maximization of the phase-shift in photopolymers has been a challenge for the last few decades. Different material compositions and irradiation conditions have been studied in order to achieve it. One of the main conclusions has been that with continuous laser exposure better results are achieved. However, our results show for the first time that higher phase-shift can be achieved using a pulsed laser. The study has been conducted with crosslinked acrylamide-based photopolymers exposed with a pulsed laser (532 nm). The increment of the phase-shift between the pulsed laser and continuous laser exposure is 17%, achieving a maximum phase-shift of 3π radians and a refractive index shift of 0.0084 at the zero spatial frequency limit, where monomer diffusion does not take place. This allows this photopolymer to be used in large-scale manufacturing.

23 Green Light laser TURP; analyse na 2 jaar vaporiseren

2011 ◽  
Vol 1 (7) ◽  
pp. 162-163
Author(s):  
J. H. Roelink ◽  
I. Hofmeester ◽  
G. J. Molijn ◽  
O. van Balen ◽  
H. E. Dijkema
Keyword(s):  
Green Light ◽  
Green Light Laser

Technique and Short-Term Outcome of Green Light Laser (KTP, 80W) Vaporisation of the Prostate

2007 ◽  
Vol 52 (6) ◽  
pp. 1632-1637 ◽  
Author(s):  
Elmar Heinrich ◽  
Frank Schiefelbein ◽  
Georg Schoen
Keyword(s):  
Green Light ◽  
Short Term ◽  
Term Outcome ◽  
Short Term Outcome ◽  
Green Light Laser

High-peak power, passively Q-switched, composite, all-poly-crystalline ceramics Nd:YAG/Cr4+:YAG laser and generation of 532-nm green light

Laser Physics ◽  
2011 ◽  
Vol 22 (1) ◽  
pp. 68-73 ◽  
Author(s):  
G. Salamu ◽  
A. Ionescu ◽  
C. A. Brandus ◽  
O. Sandu ◽  
N. Pavel ◽  
...  
Keyword(s):  
Peak Power ◽  
Green Light ◽  
High Peak ◽  
High Peak Power ◽  
Yag Laser ◽  
532 Nm

scholarly journals Ultraviolet and green receptors in principal eyes of jumping spiders.

1975 ◽  
Vol 66 (2) ◽  
pp. 193-207 ◽  
Author(s):  
R D De Voe
Keyword(s):  
Color Vision ◽  
Intracellular Recording ◽  
Uv Light ◽  
Green Light ◽  
Jumping Spider ◽  
Jumping Spiders ◽  
532 Nm

Spectral sensitivities of cells in principal eyes of the jumping spider Phidippus reqius were measured using techniques of intracellular recording. Three types of cells were found. UV cells had peak sensitivities at 370 nm and were over 4 log units less sensitive at wavelengths longer than 460 nm. Green-sensitive cells had spectral sensitivities which were well fit by nomogram curves peaking at 532 nm. UV-green cells had dual peaks of sensitivity at about 370 and 525 nm, but the ratios of UV-to-green sensitivities varied over a 40: 1 range from cell to cell. Moreover, responses of UV-green cells to flashes of UV light were slower than to flashes of green light. Segregation of receptor types into the known layers of receptors in these eyes could not be shown. It is concluded that jumping spiders have the potential for dichromatic color vision.

scholarly journals Growth, cultural and morphological characteristics of strains of Laetiporus sulphureus (Polyporales, Basidiomycota) under the influence of laser irradiation

2020 ◽  
Vol 77 (6) ◽  
pp. 472-479
Author(s):  
K.S. Reshetnyk ◽  
◽  
Yu.G. Prysedsky ◽  
Keyword(s):  
Laser Irradiation ◽  
Red Light ◽  
Green Light ◽  
Morphological Characteristics ◽  
Central Zone ◽  
Mycelium Growth ◽  
Laetiporus Sulphureus ◽  
Irradiation Energy ◽  
National University ◽  
532 Nm

The article provides growth, cultural and morphological characteristics of the vegetative mycelium on agar nutrient medium under the influence of laser irradiation for three strains of Laetiporus sulphureus from the Collection of basidiomycete cultures of the Department of Botany and Ecology of Vasyl' Stus Donetsk National University. The study was performed on potatoglucose agar (PGA) at a temperature of 26 ± 1 °C. It has been found that cultural and morphological characteristics of the colonies and the radial rate of their growth depend on the duration of irradiation (5 and 10 s) and the wavelength of light – green (532 nm), blue (405 nm) and red light (635 nm). For all studied strains of L. sulphureus, the most effective irradiation is that with green light (irradiation energy 51.1 mJ/cm2) lasting 10 s. Under the influence of this regime, the rate of radial mycelium growth increased from 23.4% to 66.7%, respectively, and the inoculum and the central zone of the surrounding colony formed a denser and higher mycelium of a pale sandy color. In general, the cultural and morphological features of the mycelial colonies of L. sulphureus strains under different conditions were somewhat different, but they were typical for this species.

scholarly journals Photoselective green-light laser vaporisation vs. TURP for BPH: meta-analysis

2012 ◽  
Vol 14 (5) ◽  
pp. 720-725 ◽  
Author(s):  
Hui Ding ◽  
Wan Du ◽  
Ze-Ping Lu ◽  
Zhen-Xing Zhai ◽  
Han-Zhang Wang ◽  
...  
Keyword(s):  
Meta Analysis ◽  
Green Light ◽  
Green Light Laser ◽  
Laser Vaporisation
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