Nova Publishers
My Account Nova Publishers Shopping Cart
HomeBooksSeriesJournalsReference CollectionseBooksInformationSalesImprintsFor Authors
            
  Top » Catalog » Books » Physics » Optics and Lasers » Femtosecond Lasers: New Research Chapters » My Account  |  Cart Contents  |  Checkout   
Quick Find
  
Use keywords to find the product you are looking for.
Advanced Search
What's New? more
Computer Simulations: Advances in Research and Applications
$82.00
Shopping Cart more
0 items
Information
Shipping & Returns
Privacy Notice
Conditions of Use
Contact Us
Notifications more
NotificationsNotify me of updates to Femtosecond Laser Excitation and Ablation of Silicon: Basic Studies (pp. 71-102)
Tell A Friend
 
Tell someone you know about this product.
Femtosecond Laser Excitation and Ablation of Silicon: Basic Studies (pp. 71-102) $100.00
Authors:  (Sergey I. Kudryashov, P.N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia)
Abstract:
A complete sequence of electronic and thermal processes  electronic dynamics,
lattice heating and melting, sub-surface cavitation, sub-critical spallative and supercritical
fragmentation ablation of the molten layer  on silicon surface excited by ultrashort
(femtosecond) laser pulses was studied using a broad variety of complementary
experimental tools.
First, time-resolved optical reflection microscopy demonstrated an optical photoresponse
of silicon via prompt modulation of interband transitions rate owing to electronhole
plasma driven band spectrum renormalization, rather than intraband carrier
transitions. The ionization-limiting Auger recombination, being stimulated by the
electronic bandgap renormalization and yielding in hot carrier generation, provides
enhanced direct emission of such electrons owing to the simultaneous renormalization of
the material higher energy states and the work function, in particular. Simultaneously,
surface electromagnetic (plasmon-polaritonic) wave was excited on the atomically
smooth wafer surface within the femtosecond laser spot through the efficient laser pump
pulse diffraction on the optically inhomogeneous photoexcitation region, and visualized
as a transient reflection grating.
Second, femtosecond laser thermal melting on silicon surface was revealed and
characterized watching transient modulation of silicon optical probe reflection by
acoustic reverberations in the melting surface layer. Sub-nanosecond sub-surface
cavitation within the surface melt appeared in the form of a few oscillatory dips on the
reflectivity plateau of its thermally expanded, acoustically relaxed sub-nanosecond state.
Sub-critical melt spallation was optically visualized as Newton interference rings,
emerging on the bubble-like spalled layer surface due to the interference between the
probe pulse replica reflected from the spalled layer and melt surface, and was
characterized in terms of delay times and lift-off velocities. Finally, high-fluence intense
ablation of silicon was characterized in terms of driving internal pressure and expansion
speed of its supercritical fluid by time-resolved optical microscopy, non-contact
ultrasonic diagnostics of air shock waves and spatially resolved optical emission
spectroscopy of ablative plume. These experimental findings are supported by our noncontact
ultrasonic diagnostics of the corresponding ablation plumes, scanning electron,
atomic force and optical interference microscopy characterization of the resulting craters.
The presented enlightening complete picture of femtosecond laser-driven electronic
and thermal processes on silicon surfaces provides the important basic input for diverse
femtosecond laser machining applications of silicon. 


Available Options:
Version:
This Item Is Currently Unavailable.
Special Focus Titles
01.Chaliapin and the Jews: The Question of Chaliapin's Purported Antisemitism
02.The Humanities: Past, Present and Future
03.The Poles: Myths and Reality
04.Child-Rearing: Practices, Attitudes and Cultural Differences
05."A Home Away from Home": A Community of International and South African University Students
06.Palliative Care: Oncology Experience from Hong Kong
07.The Enigma of Autism: Genius, Disorder or Just Different?
08.The Collector Mentality: Modernization of the Hunter-Gatherer
09.Face Processing: Systems, Disorders and Cultural Differences
10.Occurrences, Structure, Biosynthesis, and Health Benefits Based on Their Evidences of Medicinal Phytochemicals in Vegetables and Fruits. Volume 8
11.Crystal Growth: Concepts, Mechanisms and Applications
12.The Economic, Social and Political Impact of Mining on Akyem Abuakwa from the Pre-Colonial Era up to 1943

Nova Science Publishers
© Copyright 2004 - 2017

Femtosecond Laser Excitation and Ablation of Silicon: Basic Studies (pp. 71-102)