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On the role of multiphoton light absorption in pulsed laser nanoablation of diamond

Journal Article · · Quantum Electronics (Woodbury, N.Y.)
DOI:https://doi.org/10.1070/QEL15951· OSTI ID:22551088
; ; ;  [1]
  1. A M Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
The rates of multipulse nanoablation of the diamond surface in air by pico- and nanosecond laser pulses that cause singlephoton, two-photon, three-photon and four-photon absorption in diamond are measured. In the experiments the radiation of ArF, KrF and Ti : Al{sub 2}O{sub 3} lasers and the second harmonic of the Yb : YAG laser was used. The power dependence of the material etching rate on the fluence of laser pulses was found. The power exponent of this dependence appeared to be twice lower than that found earlier for femtosecond pulses. We discuss the causes of the difference in the nanoablation regularities for 'short' and 'long' laser pulses.
OSTI ID:
22551088
Journal Information:
Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 2 Vol. 46; ISSN 1063-7818
Country of Publication:
United States
Language:
English

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