|Series||ASTM special technical publication 469|
|LC Classifications||TK7871.3 .S94|
|The Physical Object|
|Number of Pages||135|
|LC Control Number||74102757|
Copy the HTML code below to embed this book in your own blog, website, or application. An uncorrected copy, or prepublication, is an uncorrected proof of the book. We publish prepublications to facilitate timely access to the committee's findings. The final version of this book has not been. Suggested Citation:"LASER-SURFACE DAMAGE."National Research Council. Fundamentals of Damage in Laser gton, DC: The National Academies Press. doi. Genre/Form: Electronic books Conference papers and proceedings Congresses Congrès: Additional Physical Format: Print version: Symposium . The damage again has a threshold, below which the effects are small. Figure shows data on the damage threshold for a particular type of Nd:glass that has been used in high-power lasers. This represents a glass with relatively high damage threshold. Once damage has been produced, the output of the laser rod is much decreased.
The coherence and low divergence angle of laser light, aided by focusing from the lens of an eye, can cause laser radiation to be concentrated into an extremely small spot on the retina.A transient increase of only 10 °C can destroy retinal photoreceptor the laser is sufficiently powerful, permanent damage can occur within a fraction of a second, literally faster than the blink of an. The potential of intense laser pulses to cause damage is often based on nonlinear processes which increase the fraction of absorbed energy far above the value which would be experienced at lower intensity levels. In particular, many media are transparent at low or moderate optical intensities, but become strongly absorbing once the threshold for laser-induced breakdown is . B. Samson Nufern, L. Dong, in Handbook of Solid-State Lasers, Optical damage. For a perfect surface, the optical damage threshold at the surface is close to that of the bulk medium in theory. In practice, the damage threshold at the surface can be much lower than that of . Chapter 4 Fundamentals of Laser-Material Interaction and Application to Multiscale Surface Modiﬁcation Matthew S. Brown and Craig B. Arnold Abstract Lasers provide the ability to accurately deliver large amounts of energy into conﬁned regions of a material in order to achieve a desired response.
Measurements were made with pulses from a krypton fluoride laser with wavelength of nm and pulse duration of 20 ns and with Nd-glass laser pulses converted to the third harmonic wavelength of. The mechanism of inclusion damage in laser glass is associated with the temperature rise of particles, or surface regions of particles, relative to the surrounding glass. The particles of greatest concern are metallic, although at very high‐power levels ceramic inclusions containing large concentrations of highly absorbing ions can likewise result in by: The laser-induced damage experiments are finished under the conditions that Q-switched Nd glass laser (the output pulse amplitude is ns, wavelength are times of nm, nm, nm) effects on the undoped glass-metal ions M0 and the incorporation of metal ions glass M1, M2. The test results show that: with the irradiation of the fundamental laser, the laser-induced . Laser-induced damage in optical materials substrates like borosilicate glass and fused silica. since the second edition of A.C. Eckbreth's book entitled Laser Diagnostics for Combustion Author: Semyon Papernov.