JLA Vol:5 Iss:1 (Tutorial Guide: Laser Measurement Techniques Guide For Hazard Evaluation. Part 1)

Authors:
Terry Lyon
Laser Microwave Division, U.S. Army Environmental Hygiene Agency

A tutorial guide is presented to provide uniform guidance when performing radiometric measurements upon laser systems to perform a hazard evaluation. This guide was requested by and presented to the Department of Defense (DOD) Laser System Safety Working Group (LSSWG) to serve as a standardized method when performing hazard evaluations primarily upon tactical and training military laser systems including laser rangefinders and designators. Technical information is provided in detail to select a suitable detector, preform radiometric measurements, assess laser system pointing errors, calculate laser pr...

JLA Vol:5 Iss:1 (Intercomparison between a C‐Series Reference Calorimeter and Two Commercially Available Laser Power/Energy Meters)

Authors:
Kirsti Leszczynski
Finnish Centre for Radiation and Nuclear Safety, SF‐00101 Helsinki, Finland

Robert W. Faaland
Center for Devices and Radiological Health, Rockville, Maryland 20857

An intercomparison between a C‐series reference calorimeter and two commercially available laser power/energy meters has been undertaken. The intercomparison has been performed at three visible laser wavelengths (488.0 nm, 514.5 nm, and 632.8 nm) and one near infrared laser wavelength (1064.0 nm). Power and energy levels presented to the instruments ranged from approximately 0.1 mW to 20 W and from 0.9 mJ to 16 J. One of the power/energy meters has a volume ab...

JLA Vol:5 Iss:1 (Determining the Spot Size and Gaussian Distribution Coefficient of Pulsed Laser Beams Using KAPTON Films)

Authors:
Z. Y. Wang
J. T. Liu
D. M. Hirak
D. C. Weckman
H. W. Kerr
Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1 Canada

The laser beam spot size at the focal point of a pulsed laser is a critical parameter in laser materials processing, but accurate determination of the spot size is very difficult, particularly for high power pulsed lasers. In this study, effective methods were developed for such determination, by interpretation of measured hole diameters produced in Kapton film using pulsed laser beams with multimode or Gaussian‐like mode structures. Analysis of the hole‐makin...

JLA Vol:4 Iss:3 (Laser Safety Incident Records Illustrate Deficiencies in Reporting and Training)

Authors:
Sidney S. Charschan
Editor‐in‐Chief JLA and chairman ANSI Z136 Accredited Standards Committee

JLA Vol:4 Iss:3 (Laser Safety in Health Care Facilities — Revision of ANSI Z136.3‐1988)

Authors:
Rocco V. Lobraico
Co‐chairman Z136.3 subcommittee

JLA Vol:4 Iss:3 (Recommendations for Safe and Appropriate Use of Lasers in Dentistry in Face of Rising Concerns)

Authors:
Leo J. Miserendino
Elliot Abt
David Harris
Harvey Wigdor
The Chicago Dental Laser Institute

JLA Vol:4 Iss:3 (ANSI Laser Safety Standard Historical Development)

Authors:
M. L. Wolbarsht
D. H. Sliney

JLA Vol:4 Iss:3 (Proposed Z136.1 Revision Nears ANSI Approval)

Authors:
Ami Kestenbaum
Secretary Z136 Accredited Standards Committee

JLA Vol:4 Iss:3 (Using the Proposed ANSI Z136.1‐1992 Standard)

Authors:
R. James Rockwell
Rockwell Laser Industries

JLA Vol:4 Iss:3 (Where We Are Today: International Update)

Authors:
Jerry Glen
Union, Kentucky