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Ablation of silicon and ultrathin fibers using single femtosecond pulse
- Source :
- Indian Journal of Physics. 93:1619-1624
- Publication Year :
- 2019
- Publisher :
- Springer Science and Business Media LLC, 2019.
-
Abstract
- We exploit the nonlinear multiphoton interaction of a few-cycle femtosecond (fs) pulse with viscoelastic microfibers in order to produce nanoscale grooves on its surface. The single fs pulse has been extracted from 1 kHz pulse train by double-shutter gating technique by placing two mechanical shutters in the beamline and simultaneously triggering them with a controlled delay. With adjustment of the time delay between two shutters, a small transmission window has been created to cleanly extract a single or desired number of pulses. We found that the single-pulse ablation threshold for microfiber is $$1 \hbox { J}/\hbox {cm }^2$$ while for absorbing surfaces like crystalline Si is $$0.01 \hbox { J}/\hbox {cm}^2$$. Precise diffraction unlimited ablation of materials opens a route to process nanoscale waveguides, microfluidic devices to isolate cells or macro-molecules.
- Subjects :
- 010302 applied physics
Diffraction
business.product_category
Materials science
Silicon
business.industry
Microfluidics
General Physics and Astronomy
chemistry.chemical_element
01 natural sciences
Pulse (physics)
chemistry
Beamline
0103 physical sciences
Femtosecond
Microfiber
Optoelectronics
business
Nanoscopic scale
Subjects
Details
- ISSN :
- 09749845 and 09731458
- Volume :
- 93
- Database :
- OpenAIRE
- Journal :
- Indian Journal of Physics
- Accession number :
- edsair.doi...........82c51c47a6608b68a61f4eff15abb612