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Observation of Superheating During Picosecond Laser Melting ?

Published online by Cambridge University Press:  26 February 2011

N. Fabricius ,
P. Hermes ,
D. Von Der Linde ,
A. Pospieszczyk  and
B. Stritzker
N. Fabricius
Affiliation:
Fachbereich Physik, Universität-GHS-Essen, 4300 Essen, Fed. Rep. of Germany
P. Hermes
Affiliation:
Fachbereich Physik, Universität-GHS-Essen, 4300 Essen, Fed. Rep. of Germany
D. Von Der Linde
Affiliation:
Fachbereich Physik, Universität-GHS-Essen, 4300 Essen, Fed. Rep. of Germany
A. Pospieszczyk
Affiliation:
Assoziation EURATOM-Kernforschungsanlage, Institut für Plasmaphysik, Kernforschungsanlage Jülich, Jülich, Fed. Rep. of Germany
B. Stritzker
Affiliation:
Institut für Festkörperforschung, Kernforschungsanlage Jülich, Jülich, Fed. Rep. of Germany
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Abstract

The surface temperature of GaAs during pulsed laser heating is obtained from the measured velocity distributions of evaporated atoms. For nanosecond pulses the observed solid-liquid transition temperature agrees with the equilibrium melting point TM. With picosecond pulses the temperature rises above TM by several hundred degrees before melting can be detected. This result is interpreted as evidence of superheating.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 51: Symposium A – Beam-Solid Interactions and Phase Transformations , 1985 , 219
Copyright
Copyright © Materials Research Society 1985

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References

REFERENCES

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