scholarly journals Thermal and laser properties of Nd:Lu_3Sc_15Ga_35O_12 for high power dual-wavelength laser

2012 ◽  
Vol 20 (7) ◽  
pp. 6944 ◽  
Author(s):  
K. Wu ◽  
L. Z. Hao ◽  
H. H. Yu ◽  
Z. P. Wang ◽  
J. Y. Wang ◽  
...  
Keyword(s):  
High Power ◽  
Dual Wavelength ◽  
Dual Wavelength Laser

Tunneling regenerated high-power dual-wavelength laser diodes

2004 ◽  
Author(s):  
Wei L. Guo ◽  
Guang D. Shen ◽  
Jian J. Li ◽  
Ting Wang ◽  
Guo Gao ◽  
...  
Keyword(s):  
High Power ◽  
Laser Diodes ◽  
Dual Wavelength ◽  
Dual Wavelength Laser

High beam quality and high power dual-wavelength laser with VRM

2018 ◽  
Vol 47 (11) ◽  
pp. 1105003
Author(s):  
靳全伟 Jin Quanwei ◽  
庞 毓 Pang Yu ◽  
蒋建锋 Jiang Jianfeng ◽  
谭 亮 Tan Liang ◽  
崔玲玲 Cui Lingling ◽  
...  
Keyword(s):  
High Power ◽  
Beam Quality ◽  
Dual Wavelength ◽  
Dual Wavelength Laser ◽  
High Beam ◽  
High Beam Quality

scholarly journals Variable spot size optical system for a dual-wavelength laser therapy device

2020 ◽  
Vol 13 (04) ◽  
pp. 2050018
Author(s):  
Ningning Dong ◽  
Jinjiang Cui ◽  
Jiangen Xu
Keyword(s):  
Laser Therapy ◽  
Optical System ◽  
High Power ◽  
Spot Size ◽  
Dual Wavelength ◽  
High Power Laser ◽  
Power Laser ◽  
Dual Wavelength Laser ◽  
Beam Combination ◽  
532 Nm

The majority of existing high-power laser therapeutic instruments employ a single wavelength for a single target; thus, they do not meet the requirements for clinical treatment. Therefore, this study designs an optical system for a dual-wavelength high-power laser therapeutic device with a variable spot size. The waist of the short arm of the optical cavity and the G1G2 parameter (G-parameter equivalent cavity method) is calculated using MATLAB software, the spot size and divergence angle on the lens are calculated using an ABCD matrix, and the distance between the treatment spot at different spot sizes and the transformation lens is calculated in order to design the treatment handpiece. Experiments are conducted to analyze the stability at an output power of 532 nm before beam combination and the power loss after beam combination. The results show that the output power stability of the 532-nm beam varies by less than 2% over 150 min, and the loss of both wavelengths is less than 20%, which meets the clinical requirements of the system. The safety performance can meet the requirements of national general standards for medical electrical safety. The proposed dual-wavelength laser therapy instrument has both visible wave and near-infrared wave characteristics; thus, it can accurately target both superficial vessels and vessels with a larger diameter and deeper position. This therapeutic device has the advantages of simple operation, stable and reliable laser output, high security and strong anti-interference ability, and meets the comprehensive clinical treatment demands of vascular diseases.

High-power dual-wavelength laser with disordered Nd:CNGG crystals

2009 ◽  
Vol 34 (2) ◽  
pp. 151 ◽  
Author(s):  
Haohai Yu ◽  
Huaijin Zhang ◽  
Zhengping Wang ◽  
Jiyang Wang ◽  
Yonggui Yu ◽  
...  
Keyword(s):  
High Power ◽  
Dual Wavelength ◽  
Dual Wavelength Laser

Dual wavelength laser-induced damage threshold measurements of alumina/silica and hafnia/silica ultraviolet antireflective coatings

2015 ◽  
Vol 55 (1) ◽  
pp. 104 ◽  
Author(s):  
Marius Mrohs ◽  
Lars Jensen ◽  
Stefan Günster ◽  
Thimotheus Alig ◽  
Detlev Ristau
Keyword(s):  
Damage Threshold ◽  
Dual Wavelength ◽  
Antireflective Coatings ◽  
Dual Wavelength Laser ◽  
Laser Induced Damage

Widely tunable dual-wavelength operation of a high-power Tm:fiber laser using volume Bragg gratings

2010 ◽  
Vol 35 (14) ◽  
pp. 2388 ◽  
Author(s):  
Fei Wang ◽  
Deyuan Shen ◽  
Dianyuan Fan ◽  
Qisheng Lu
Keyword(s):  
High Power ◽  
Bragg Gratings ◽  
Dual Wavelength ◽  
Volume Bragg Gratings

scholarly journals Feasibility study of a dual wavelength laser cleaner

2017 ◽  
Vol 901 ◽  
pp. 012105
Author(s):  
K Chongcharoen ◽  
P Kittiboonanan ◽  
A Ratanavis
Keyword(s):  
Feasibility Study ◽  
Dual Wavelength ◽  
Dual Wavelength Laser

scholarly journals Intraoral Dual Wavelength Laser Diode Therapy for Chronic Maxillary Sinusitis.

LASER THERAPY ◽  
2020 ◽  
Vol 29 (1) ◽  
pp. 35-40
Author(s):  
Reham ALaa Elkalla ◽  
Adel Abdel Hamid Nossier ◽  
Audrey Lynn Millar ◽  
Mohamed Mahmoud El-Sheikh ◽  
Rania Abdelhady Ahmed El Behairy ◽  
...  
Keyword(s):  
Laser Diode ◽  
Maxillary Sinusitis ◽  
Dual Wavelength ◽  
Dual Wavelength Laser ◽  
Chronic Maxillary Sinusitis

Investigation of dual-wavelength laser beam propagation along the in-door atmospheric path

2015 ◽  
Author(s):  
Alina V. Gorelaya ◽  
Elena V. Shubenkova ◽  
Dmitriy I. Dmitriev ◽  
Anna D. Dmitrieva ◽  
Alexis V. Kudryashov ◽  
...  
Keyword(s):  
Laser Beam ◽  
Beam Propagation ◽  
Dual Wavelength ◽  
Laser Beam Propagation ◽  
Dual Wavelength Laser ◽  
Atmospheric Path
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