Oscillation of the refractive index at the focal region of a femtosecond laser pulse inside a glass
Optics Letters, Vol. 29, Issue 13, pp. 1548-1550 (2004)
http://dx.doi.org/10.1364/OL.29.001548
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Abstract
The temporal evolution of refractive-index change produced by a tightly focused femtosecond (fs) laser pulse inside a soda-lime glass plate was investigated by use of a transient lens method with subpicosecond time resolution. An oscillating behavior of the light intensity in the central region of the probe beam was observed 0–1500 ps after irradiation of the plate. The oscillation was interpreted in terms of a rapid temperature increase and the ensuing propagation of the pressure wave. This study is to our knowledge the first real-time observation of refractive-index change inside a glass induced by a fs laser pulse.
© 2004 Optical Society of America
OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(160.2750) Materials : Glass and other amorphous materials
(220.4000) Optical design and fabrication : Microstructure fabrication
(320.5390) Ultrafast optics : Picosecond phenomena
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
(350.6830) Other areas of optics : Thermal lensing
Citation
Masaaki Sakakura and Masahide Terazima, "Oscillation of the refractive index at the focal region of a femtosecond
laser pulse inside a glass," Opt. Lett. 29, 1548-1550 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-13-1548
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