scholarly journals Efficient continuous-wave and passively Q-switched pulse laser operations in a diffusion-bonded sapphire/Er:Yb:YAl_3(BO_3)_4/sapphire composite crystal around 155 μm

2018 ◽  
Vol 26 (1) ◽  
pp. 419 ◽  
Author(s):  
Yujin Chen ◽  
Yanfu Lin ◽  
Jianhua Huang ◽  
Xinghong Gong ◽  
Zundu Luo ◽  
...  
Keyword(s):  
Pulse Laser ◽  
Continuous Wave ◽  
Composite Crystal

Continuous wave supercontinuum generation aided by a weaker pulse laser

2012 ◽  
Author(s):  
G. Fernandes ◽  
M. Facão ◽  
M. I. Carvalho ◽  
S. Rodrigues ◽  
J. Heidarialamdarloo ◽  
...  
Keyword(s):  
Pulse Laser ◽  
Continuous Wave ◽  
Supercontinuum Generation

High-peak-power and short-pulse laser with a Yb:YAG/Cr4+:YAG/YAG composite crystal

2018 ◽  
Vol 47 (6) ◽  
pp. 606007
Author(s):  
李景照 Li Jingzhao ◽  
陈振强 Chen Zhenqiang ◽  
朱思祁 Zhu Siqi
Keyword(s):  
Pulse Laser ◽  
Peak Power ◽  
Short Pulse ◽  
High Peak ◽  
High Peak Power ◽  
Short Pulse Laser ◽  
Composite Crystal

scholarly journals Fabrication and diode-pumped 155 μm continuous-wave laser performance of a diffusion-bonded Er:Yb:YAl_3(BO_3)_4/YAl_3(BO_3)_4 composite crystal

2017 ◽  
Vol 25 (15) ◽  
pp. 17128 ◽  
Author(s):  
Yujin Chen ◽  
Yanfu Lin ◽  
Jianhua Huang ◽  
Xinghong Gong ◽  
Zundu Luo ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Continuous Wave Laser ◽  
Laser Performance ◽  
Composite Crystal ◽  
Diode Pumped ◽  
Wave Laser

Experimental and Numerical Analysis of Thermal Ablation in Biological Tissues Using Short Pulse Lasers

2010 ◽  
Author(s):  
Amir Sajjadi ◽  
Ogugua Onyejekwe ◽  
Kunal Mitra ◽  
Michael S. Grace
Keyword(s):  
Pulse Laser ◽  
Continuous Wave ◽  
Short Pulse ◽  
Skin Surface ◽  
Biological Tissues ◽  
Tumor Ablation ◽  
Laser Source ◽  
Striated Muscles ◽  
Short Pulse Laser ◽  
Ultra Short Pulse

For the past few years various photothermal methods such as Laser-induced Hyperthermia [1] and Laser Interstitial Thermal Therapy [2] has been developed for tumor ablation. In all of these existing techniques, either continuous wave (CW) or long pulse laser sources have been used, which often produces heat affected zones that are larger than the boundaries of the tumor, which leads to collateral damage of surrounding healthy tissue. Moreover for these applications, either collimated or diffused laser beams are used, resulting in much of the energy being absorbed by tissues at the skin surface and very little remaining energy penetrating the skin. Such drawbacks can be eliminated if a beam from a short pulse laser source is focused directly at the targeted subsurface location. Tight focusing ensures that sufficient intensity to drive nonlinear optical absorption can be achieved with low pulse energy. This technique has been effectively used in applications such as non-ablative dermal remodeling [3] and treatment of striated muscles [4]. However, the use of focused beam from an ultra-short pulse laser source has never been applied to tumor ablation and is investigated in this paper.

Comparison of continuous-wave, chop-wave, and super pulse laser wounds

1988 ◽  
Vol 8 (2) ◽  
pp. 119-124 ◽  
Author(s):  
Raymond J. Lanzafame ◽  
John O. Naim ◽  
David W. Rogers ◽  
J. Raymond Hinshaw
Keyword(s):  
Pulse Laser ◽  
Continuous Wave

Laser Chemical Etching Trench Refinements for Backside Debug Journey to the Circuit Layer

2020 ◽  
Author(s):  
Matthew M. Mulholland ◽  
Shida Tan ◽  
Muhammad Usman Raza ◽  
Matthew Levesque ◽  
Jordan Furlong ◽  
...  
Keyword(s):  
Pulse Laser ◽  
Chemical Etching ◽  
Focused Ion Beam ◽  
Continuous Wave ◽  
Ion Beam ◽  
Laser System ◽  
Laser Etching ◽  
Laser Patterning ◽  
Silicon Thickness ◽  
532 Nm

Abstract The journey to the circuit layer will be described by first discussing baseline processes of laser assisted chemical etching (LACE) steps before the focused ion beam (FIB) workflow. These LACE processes take advantage of a dual 532 nm continuous wave (CW) and pulse laser system, however limitations and overhead that is transferred over to the FIB operator will be demonstrated. Experiments show an additional third 355 nm ultraviolet (UV) pulse laser process introduction into the workflow can further reduce the remaining silicon thickness (RST) relieving FIB overhead. In addition, complex pulse laser patterning techniques will show a refinement to nonuniform produced silicon. Finally, other pulse laser patterning techniques such as polygon etch capability will allow laser etching around and in-between features to enhance circuit layer accessibility for debug operations.

Laser performance of grown-together YVO4/Nd:YVO4 composite crystal at continuous-wave 914 nm

Laser Physics ◽  
2009 ◽  
Vol 19 (10) ◽  
pp. 1960-1963 ◽  
Author(s):  
X. Yu ◽  
R. P. Yan ◽  
M. Luo ◽  
F. Chen ◽  
X. D. Li ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Laser Performance ◽  
Composite Crystal

Ablation of Subsurface Tumors Using 1552 nm Ultra-Short Pulse Laser

2008 ◽  
Author(s):  
Shreya Raje ◽  
Amir Sajjadi ◽  
Kunal Mitra ◽  
Michael S. Grace
Keyword(s):  
Laser Beam ◽  
Pulse Laser ◽  
Continuous Wave ◽  
Short Pulse ◽  
Laser Source ◽  
Short Pulse Laser ◽  
Fiber Optic Probes ◽  
Laser Immunotherapy ◽  
Ultra Short Pulse ◽  
Long Pulse

Over last two decades lasers have been used for the treatment of subsurface tumors. Various techniques such as Laser-induced Hyperthermia, Laser Interstitial Thermal Therapy (LITT), and Laser Immunotherapy have been developed for the successful ablation of subsurface tumors by different researchers. All these techniques use photo-thermal mechanism for tumor ablation by delivering thermal energy at the tumor site. In all these existing techniques, either continuous wave (CW) or long pulse laser source has been used, which often produces larger heat affected zone as compared to that produced by short pulse laser. Moreover, the delivery of laser beam at the target site is achieved through fiber optic probes which often require perforation of the skin. These drawbacks can be eliminated if a converging laser beam from a short pulse laser source is directly focused at the subsurface location to ablate the tumor.

A 15.1 W continuous wave TEM00 mode laser using a YVO4/Nd:YVO4 composite crystal

Laser Physics ◽  
2009 ◽  
Vol 19 (11) ◽  
pp. 2069-2072 ◽  
Author(s):  
Z. Zhao ◽  
Y. Dong ◽  
C. Liu ◽  
M. Hu ◽  
Z. Xiang ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Mode Laser ◽  
Composite Crystal ◽  
Tem00 Mode
Sign in / Sign up

Export Citation Format

Share Document