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Laser-induced Forward Transfer of Ag Nanopaste

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"Stealth Scripts": Ultrashort Pulse Laser Luminescent Microscale Encoding of Bulk Diamonds via Ultrafast Multi-Scale

Sergey Kudryashov¹, Pavel Danilov¹, Nikita Smirnov¹

¹Lebedev Physical Institute, 119991 Moscow, Russia.

Nanomaterials (Basel, Switzerland)

|January 8, 2023

Summary

Ultrashort laser pulses modify diamond structures, creating advanced optical probes and stealth encoding. Understanding these processes is key for fabricating single-photon devices and tracing natural diamonds.

Keywords:

atomistic structural transformations diamonds filamentation high temperature nanoscale impurity defects optical impurity centers photoexcitation photoluminescent encoding transient stresses ultrashort-laser pulses

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Last Updated: Aug 15, 2025

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Published on: November 22, 2019

Area of Science:

Materials Science
Optics
Solid State Physics

Background:

Fabricating optical impurity centers in diamond using ultrashort lasers is crucial for advanced applications.
Current understanding of the multi-scale processes involved in laser-induced diamond modification is limited.
These processes are fundamental to creating spectroscopic probes and nanophotonic devices.

Purpose of the Study:

To elucidate the mechanisms of ultrashort laser photoexcitation and structural modification in diamond.
To understand the non-linear dependencies of these processes on laser parameters.
To provide insights for advanced modeling and technological development.

Main Methods:

Investigated non-linear wavelength-, polarization-, intensity-, pulsewidth-, and focusing-dependent photoexcitation.
Analyzed energy deposition mechanisms coupled with ultrashort laser pulse propagation.
Studied ultrafast off-focus energy transport by electron-hole plasma and transient stress generation.

Main Results:

Detailed the photoexcitation and energy deposition mechanisms in diamond under ultrashort laser irradiation.
Revealed the role of electron-hole plasma and phonon-induced stress in structural modifications.
Identified diverse atomistic structural modifications in the diamond lattice.

Conclusions:

Findings illuminate fundamental multi-scale processes in laser-matter interaction in diamond.
Pave the way for advanced experiments and atomistic/two-temperature modeling.
Enable technological breakthroughs in single-photon sources and stealth luminescent nano/microencoding.