Co-amplification: An efficient spectral beam combination approach for high power, closely separated dual wavelength dye laser systems

2019 ◽  
Vol 451 ◽  
pp. 367-373 ◽  
Author(s):  
Paramjit Rana ◽  
S.K. Mishra ◽  
S.P. Sahoo ◽  
D. Bhale ◽  
G. Sridhar ◽  
...  
Keyword(s):  
High Power ◽  
Dye Laser ◽  
Dual Wavelength ◽  
Beam Combination ◽  
Laser Systems ◽  
Combination Approach

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 NARROW-BAND TUNEABLE IMPACT PERIODIC DYE LASER

2010 ◽  
Vol 69 (14) ◽  
pp. 1301-1309
Author(s):  
V. P. Pelipenko ◽  
P.G. Dalchenko ◽  
M. I. Dzyubenko
Keyword(s):  
High Power ◽  
Narrow Band ◽  
Dye Laser

Large Mode Area Solid-Core Photonic Bandgap Yb-doped Fiber with Hetero-Structured Cladding for Compact High-Power Laser Systems

2021 ◽  
pp. 1-1
Author(s):  
Olivier Vanvincq ◽  
Andy Cassez ◽  
Remi Habert ◽  
Hicham El Hamzaoui ◽  
Karen Baudelle ◽  
...  
Keyword(s):  
High Power ◽  
Photonic Bandgap ◽  
Solid Core ◽  
High Power Laser ◽  
Power Laser ◽  
Large Mode Area ◽  
Laser Systems ◽  
Mode Area

Fibre-coupled air-cooled high-power diode laser systems

2008 ◽  
Author(s):  
Daniel Bartoschewski ◽  
Jens Meinschien ◽  
Udo Fornahl
Keyword(s):  
Diode Laser ◽  
High Power ◽  
Laser Systems ◽  
Power Diode ◽  
High Power Diode Laser

scholarly journals Investigation of serial coherent laser beam combination based on Brillouin amplification

2007 ◽  
Vol 25 (1) ◽  
pp. 79-83 ◽  
Author(s):  
SHUANGYI WANG ◽  
ZHIWEI LÜ ◽  
DIANYANG LIN ◽  
LEI DING ◽  
DONGBIN JIANG
Keyword(s):  
Laser Beam ◽  
High Power ◽  
Simple Structure ◽  
Low Cost ◽  
Coupling Efficiency ◽  
Laser Beams ◽  
Beam Combination ◽  
Multiple Beams ◽  
Combination Scheme ◽  
Stokes Beam

Based on transferring energy from multiple pump beams into one Stokes beam using Brillouin amplification, a serial coherent laser beam combination scheme is presented, which has many advantages, such as, simple structure, low cost, ease of adjustment, higher load capability, scalable easily, etc. Furthermore, it has been demonstrated that the combination of several beams using this method is theoretically possible. But in practice, the amplification of high power Stokes beam is a key problem to solve. In this paper, the amplification of Stokes beam whose power is higher than the pump beam is first studied and proved experimentally. Coupling the two laser beams by this method is proved experimentally, and the coupling efficiency reaches more than 80%. Then the feasibility of multiple beams combination based on Brillouin amplification is analyzed and tested theoretically.

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
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