Hostname: page-component-cd9895bd7-dzt6s Total loading time: 0 Render date: 2024-12-25T16:57:01.233Z Has data issue: false hasContentIssue false

Transmittance in a thin aluminum layer at nanosecond pulsed laser ablation

Published online by Cambridge University Press:  13 February 2017

Y.V. Senatsky*
Affiliation:
P.N. Lebedev Physics Institute of the Russian Academy of Sciences, Leninsky prospect, 53, 119991 Moscow, Russia
N.E. Bykovsky
Affiliation:
P.N. Lebedev Physics Institute of the Russian Academy of Sciences, Leninsky prospect, 53, 119991 Moscow, Russia
S.M. Pershin
Affiliation:
A.M. Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilova Street, 38, 119991 Moscow, Russia
A.A. Samokhin
Affiliation:
A.M. Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilova Street, 38, 119991 Moscow, Russia
*
Address correspondence and reprint requests to: Y.V. Senatsky, P.N. Lebedev Physics Institute of the Russian Academy of Sciences, Leninsky prospect, 53, 119991 Moscow, Russia. E-mail: [email protected]

Abstract

Since the beginning of the 1960s and up to the present time, laser ablation from metal surfaces under the action of short light pulses has been the topic of many researches. One of the first objects in the early ablation experiments presented thin metal films evaporated by radiation, which were used in lasers with nanosecond pulses as optical gates for Q-switching in resonators or for decoupling in amplifiers. Bleaching of the gates based on metal layers with a time constant τt ≈ 10−8 s observed in a number of experiments, was usually considered as a result of a simple evaporation of matter. We analyze the data of the experiments with a mylar tape [0.05 µm aluminum (Al) layer on ≈20 µm lavsan substrate] used as a gate for optical isolation in one of the first Nd: glass laser facilities with a power of ≈1 GW. That gate was irradiated by pulses of Q-switched oscillators: pulse duration 10−7–10−8 s, intensity 107–108 W/cm2. A jump in the transmittance of the expanding Al layer was registered (from ≈0.1 to 50% at τt ≈ 10−9 s). The present study shows that one should consider the metal–insulator phase transition in a superheated liquid metal layer as the mechanism of the fast (up to 10–10–10–11 s) increase in the transmittance of the Al film gate at nanosecond-pulsed laser ablation.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2017 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Andreev, S.N., Mazhukin, V.I., Nikiforova, N.M. & Samokhin, A.A. (2003). On possible manifestations of the induced transparency during laser evaporation of metals. Quantum Electron. 33, 771776.CrossRefGoogle Scholar
Askar'yan, G.A. & Tarasova, N.M. (1973). Passage of microwaves and current through a metallized film evaporated by a laser flash (pulsed window for microwaves). Production and use of steep microwave fronts. Pis'ma Zh. Eksp. Teor. Fiz. 18, 35.Google Scholar
Asmus, J.F. (1969). A High-Power Laser Shutter. Appl. Opt. 8, 12521253.Google Scholar
Basov, N.G., Ambartsumyan, R.V., Borovich, B.L., Zuev, V.S., Kryukov, P.G., Letokhov, V.S., Morozov, V.M., Oraevskii, A.N., Senatsky, Y.V., Stoilov, Y.Y. & Shcheglov, V.A. (1966). Report on Research Project ‘1B’ Moscow: P.N. Lebedev Physics Institute.Google Scholar
Basov, N.G., Zuev, V.S. & Senatsky, Y.V. (1965). Neodymium–glass laser with pulsed Q-switching. Pis'ma Zh. Eksp. Teor. Fiz. 2, 35.Google Scholar
Batanov, V.A., Bunkin, F.V., Prokhorov, A.M. & Fedorov, V.B. (1973). Evaporation of metallic targets caused by intense optical radiation. Sov. Phys. – JETP 36, 311322.Google Scholar
Bonch-Bruevich, A.M., Imas, Y.A., Romanov, G.S., Libenson, M.N. & Mal'tsev, L.N. (1968). Changing the reflectivity of the metal for the duration of the laser pulse. Sov. Phys.– Tech. Phys. 13, 640.Google Scholar
Bykovsky, N.E., Pershin, S.M., Samokhin, A.A. & Senatsky, Y.V. (2016). Transmittance jump in a thin aluminium layer during laser ablation. Quantum Electron. 46, 128132.CrossRefGoogle Scholar
Fishburn, J.M., Withford, M.J., Coutts, D.W. & Piper, J.A. (2004). Method for determination of the volume of material ejected as molten droplets during visible nanosecond ablation. Appl. Opt. 43, 64736476.CrossRefGoogle ScholarPubMed
Grant, D. (1963). A technique for obtaining single, high peak power pulses from a ruby laser. Proc. IEEE 51, 604.Google Scholar
Khomkin, A.L. & Shumikhin, A.S. (2015). Critical points of metal vapors. J. Exp. Theor. Phys. 121, 521528.Google Scholar
Kikoin, I.K. & Senchenkov, A.P. (1967). Electrical conduction and the equation of state of mercury in the temperature range 0–2000°C and pressure region 200–5000 atmospheres. Fiz. Met. Metalloved. 24, 843858.Google Scholar
Mazhukin, V.I., Samokhin, A.A., Demin, M.M. & Shapranov, A.V. (2014). Explosive boiling of metals upon irradiation by a nanosecond laser pulse. Quantum Electron. 44, 283285.Google Scholar
Mott, N.F. (1974). Metal–Insulator Transitions. London: Taylor & Fransis.Google Scholar
Pershin, S.M., Colao, F. & Spizzichino, V. (2006). Quantitative analysis of bronze samples by laser-induced breakdown spectroscopy (LIBS): A new approach, model, and experiment. Laser Phys. 16, 455467.Google Scholar
Porneala, C. & Willis, D.A. (2006). Effect of the dielectric transition on laser-induced explosion in metals. Int. J. Heat Mass Transfer 49, 19281936.Google Scholar
Senatsky, Y.V. (1970). Development and research of high-power neodymium glass laser for high-temperature plasma heating . PhD Thesis. Moscow: P.N. Lebedev Physics Institute.Google Scholar
Sokolowski-Tinten, K., Bialkowski, J., Cavalleri, A., von der Linde, D., Oparin, A., Meyer-ter-Vehn, J. & Anisimov, S.I. (1998). Transient states of matter during short pulse laser ablation. Phys. Rev. Lett., 81, 224227.CrossRefGoogle Scholar
Vanyukov, M.P., Isaenko, V.I., Pashinin, P.P., Serebryakov, V.A., Sizov, V.N. & Starikov, A.D. (1971). Formation of high-power pulses with steep leading edges in a laser system with passive nonlinear elements. Sov. J. Quantum Electron. 1, 2327.Google Scholar
Zel'dovich, Y.B. & Landau, L.D. (1944). On the relation between the liquid and the gaseous states of metals. Zh. Eksp. Teor. Fiz. 14, 32.Google Scholar
Zuev, V.S. & Senatsky, Y.V. (2015). On the operation of an optical shutter based on a thin metal film. Bull. Lebedev Phys. Inst. 42, 102106.Google Scholar