scholarly journals Development of an MPLC‐based laser head

2021 ◽  
Vol 18 (6) ◽  
pp. 54-58
Author(s):  
Julien Bayol
Keyword(s):  
Laser Head

Dependence of the stability and the beam quality on the distance between two rods in a double laser-head resonator

2002 ◽  
Vol 201 (4-6) ◽  
pp. 381-389 ◽  
Author(s):  
Hyun Su Kim ◽  
Sungman Lee ◽  
Do-Kyeong Ko ◽  
Byung Heon Cha
Keyword(s):  
Beam Quality ◽  
Laser Head ◽  
The Stability

scholarly journals Development of fiber laser optic system for laser polishing of parts

2016 ◽  
Vol 1 (9) ◽  
pp. 16-23 ◽  
Author(s):  
Александр Савкин ◽  
Aleksandr Savkin ◽  
Владислав Фунтиков ◽  
Vladislav Funtikov ◽  
Александр Григорьянц ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Fiber Laser ◽  
High Power ◽  
Fiber Lasers ◽  
Sample Surface ◽  
Optic System ◽  
Laser Polishing ◽  
Approximate Description ◽  
Laser Head ◽  
Laser Optic

The possibility of an approximate description of a multimode beam of a fiber laser in the Zemax modeling system for the development of an optic system of a laser head is shown. There are developed and manufactured optic units of a laser head taking into account characteristic peculiarities of radiation of high-power fiber lasers. The possibilities are shown the developed optic system in the technology of laser polishing by the remelting of a sample surface made of stainless steel of type 1540-00.

Laser Cladding of Alumina Material Coating: Effects on Deposition Quality

2016 ◽  
Author(s):  
Yuzhou Li ◽  
Weilong Cong ◽  
Fuda Ning ◽  
Rongxia Huang
Keyword(s):  
Laser Cladding ◽  
High Performance ◽  
Ceramic Coating ◽  
High Hardness ◽  
Alumina Ceramic ◽  
Properties Of Coatings ◽  
Surface Protection ◽  
Laser Head ◽  
Coating Methods ◽  
Input Variables

Alumina ceramic is a high performance engineering material with excellent properties, including high melting point, high hardness and brittle nature make the alumina ceramic difficult to machine and needing high cost by using conventional manufacturing methods. Coating is an important method for alumina fabrication. The excellent properties of coatings can be used for special surface protection and ceramic parts repairing. Comparing with other coating methods, laser cladding method has many good properties to overcome the drawbacks. The reported investigations on laser cladding provide little information about alumina materials for ceramic coating. In this paper, effects of different input variables of laser cladding of alumina materials for ceramic coating were studied. And this paper for the first time reported the relationship between the properties (including surface roughness, flatness and powder efficiency) and input variables such as laser power, powder feeding rate and laser head moving rate. The obtained results will be helpful to establish efficient and effective processes for ceramics coating.

Optical-Thermal Response and Dynamic Thermal Damage of Bio-Tissue During Laser Thermotherapy

2003 ◽  
Author(s):  
G. M. Zhu ◽  
W. Liu ◽  
T. F. Zeng ◽  
K. Yang
Keyword(s):  
Thermal Injury ◽  
Thermal Damage ◽  
Tumor Tissue ◽  
Local Heating ◽  
Damage Model ◽  
Thermal Response ◽  
Tumor Treatment ◽  
Thermal Coagulation ◽  
Laser Head ◽  
Temperature Damage

Laser thermotherapy is a technique used for tumor treatment. It generates a local heating, causes thermal coagulation of living tissue and eliminates the tumor. Precise heating of tumor tissue with healthy minimum thermal injury to adjacent tissue is essential to thermotherapy. Understanding of heat transfer and optical-thermal interaction is important for control of temperature and design of thermotherapy. This study applies the Arrhenius damage model to describe the heat-induced change of optical properties. It calculates the distribution temperature, damage and optical-thermal response of bio-tissue during the laser treatment, and shows how these factors affect the effectiveness of laser thermotherapy. Similar research has been performed by Kim and coworkers [1996], Iizuka and coworkers [2000], and Whelan and coworkers [2000]. This study relaxes some conditions in previous investigations. It reveals the importance and the effect of size of the laser head.

Methods for aligning a laser head on a numerically controlled machine

2021 ◽  
Vol 64 (10) ◽  
pp. 869-874
Author(s):  
A.D. Nikolaev ◽  
K.P. Pompeev ◽  
P.A. Pyae
Keyword(s):  
Laser Head

scholarly journals Solid state heat capacity disk laser

1998 ◽  
Vol 16 (4) ◽  
pp. 605-625 ◽  
Author(s):  
G.F. Albrecht ◽  
S.B. Sutton ◽  
E.V. George ◽  
W.R. Sooy ◽  
W.F. Krupke
Keyword(s):  
Heat Capacity ◽  
Solid State ◽  
Active Medium ◽  
Conceptual Design ◽  
Scaling Laws ◽  
Waste Heat ◽  
Laser System ◽  
Solid State Laser ◽  
State Laser ◽  
Laser Head

This paper describes a solid state laser concept that scales to MW levels of burst power and MJ of burst energy and burst durations measured in seconds. During lasing action, waste heat is purposely stored in the heat capacity of the active medium. The paper outlines the principal scaling laws of key operational features and arrives at a conceptual design example of the laser head as well as a mobile laser system.

The Software Development of Double-Beam Centroid Distance Measurement System in Laser Cladding Forming Process

2011 ◽  
Vol 464 ◽  
pp. 524-527
Author(s):  
Cheng Feng Sun ◽  
Shi Hong Shi ◽  
Ge Yan Fu ◽  
Chun Sheng Li
Keyword(s):  
Laser Cladding ◽  
Molten Pool ◽  
Forming Process ◽  
Development Platform ◽  
Laser Head ◽  
Centroid Distance ◽  
Double Beam ◽  
Spot Image ◽  
The Stability ◽  
Effect Of Light

In the high-piled up process of laser cladding rapid forming , the distance between aser molten pool center and flour will increase along with the cladding layer ,which will cause the effect of light powder coupling getting worse, even directly lead to failure. The article proposed characteristics of the double-spot ,formed by molten pool and reflection of laser surface;used VC++ 6.0 as the development platform of image processing to calculate two spot centroid distance by dealing two spot image with the process of gray processing, Gaussian smoothing, binary threshold segmentation, area centroid calculation, the centroid coordinate distance calculation.At the same time , controlling laser head Z to move in accordance with the value increment,to increase the stability of forming process and forming quality.

Sign in / Sign up

Export Citation Format

Share Document