Lasers: The Perioperative Challenge (4th edition)

This fourth edition is your guide to all aspects of laser technology in health care. It analyzes which laser is used for popular procedures and why, along with providing templates for writing laser safety policies and procedures for the clinical environment.

LIA Guide to High Power Laser Cutting

Introducing LIA's Guide to High Power Laser Cutting, authored by John Powell, Dirk Petring, Jetro Pocorni and Alexander Kaplan. In this first edition, students, engineers and scientists alike will gain a more in-depth understanding of the science behind laser cutting.

Hybrid Laser-Arc Welding

Hybrid laser-arc welding (HLAW) is a combination of laser welding with arc welding that overcomes many of the shortfalls of both processes. This important book gives a comprehensive account of hybrid laser-arc welding technology and applications.

JLA Vol:7 Iss:2 (Fraunhofer resource center for laser technology ‐ USA)

Authors:
Frank W. Kuepper
Fraunhofer Resource Center for Laser Technology, Ann Arbor, MI, U.S.A.

JLA Vol:7 Iss:1 (Development of laser finishing for non‐circular profiles)

Authors:
Ko‐Wang Liu
Paul S. Sheng
Department of Mechanical Engineering, University of California, Berkeley, CA 94720‐1740, U.S.A.

A laser‐based technique for finishing of non‐circular cylindrical parts is presented. In this process, the frequency characteristics of a desired non‐circular shape is extracted from a CAD through a Fast Fourier Transform algorithm and implemented through a CO₂ laser machining system. A galvanometer‐based scanner is used in the process to achieve programmable beam trajectories and high‐speed finishing. An error estimation scheme can be developed to determine the final dimensional erro...

JLA Vol:7 Iss:2 (Fraunhofer‐Institut fu¨r Lasertechnik)

Authors:
Eckhard Beyer
Fraunhofer‐Institut fu¨r Lasertechnik, Aachen, Germany

JLA Vol:7 Iss:2 (Laser processing centers and their research projects in Japan)

Authors:
Akira Matsunawa
Welding Research Institute, Osaka University, 11‐1 Mihogaoka, Ibaraki, Osaka 567, Japan

In Japan, R&D activities on laser materials processing are mainly conducted in universities, public research institutions, and technical centers in private enterprise. Among them the Welding Research Institute and the Department of Welding and Production Engineering, both at Osaka University, have taken the initiative in conducting fundamental studies on laser materials processing as well as training experts and engineers in laser technology since the mid 1960s. In 1990, a new laser center called the Applied Laser Engineering Center (ALEC) was established in Naga...

JLA Vol:7 Iss:2 (Fiber optic equipment to supplement today's laser electro‐optic laboratories and global communication highway)

Authors:
Thomas A. Cellucci
Newport Corporation, 1791 Deeve Ave., Irvine, CA 92714, U.S.A.

As the key technology of the Information Superhighway, fiber optics is poised for explosive growth in the next decade. This paper identifies some of the major obstacles involved in establishing a university‐level fiber optics laboratory, and suggests time‐and money‐saving solutions with an emphasis on pre‐packaged fiber optic laboratory kits.

JLA Vol:7 Iss:1 (Electrical hazards associated with lasers)

Authors:
Arthur G. Varanelli
Raytheon Co., 141 Spring St., Lexington, MA 02173, U.S.A.

The range and degree of electrical hazards associated with lasers is generally greater than encountered with other forms of equipment in the industrial, commercial, or scientific sectors. In laser equipment the electrical energy conversion to ‘optical’ wavelength energy is achieved by many methods, each method having differing electrical safety hazard exposures. Laser output is described in terms of beam power, energy, wavelength, and spatial characteristics, enabling common points of comparison and beam hazard characterization. In contrast, the methods of electrical energy conversion ha...

JLA Vol:7 Iss:1 (Ultrasonic vibration aided laser welding of Al alloys: improvement of laser welding‐quality)

Authors:
J. S. Kim
T. Watanabe
Y. Yoshida

Using a pulsed YAG laser, meltability of Al‐Mg and Al‐Mg‐Si alloys were investigated by a single‐pass irradiation. In order to improve the quality in laser welding, the effectiveness of the Ultrasonic Vibration Laser Welding (UVLW) method proposed in this paper was investigated experimentally. The proposed method was also compared with the traditional welding methods of Normal Laser Welding (NLW) and preHeating Laser Welding (HLW). The welding methods were evaluated from the geometry in the melt zone generated by a single pulse of the laser beam. It was suggested that ultrasonic vibration ...