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Proceedings Paper

Laser induced periodic surface structure formation in germanium above laser damage fluence by mid IR femtosecond laser irradiation
Author(s): Kyle Kafka; Drake Austin; Jian Cheng; Simeon Trendafilov; Gennady Shvets; Hui Li; Allen Yi; Cosmin I. Blaga; L. F. DiMauro; Enam Chowdhury
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Paper Abstract

Laser induced periodic surface structures (LIPSS) were generated via interaction of multiple 90 femtosecond 1900 - 3600 nm mid IR laser pulses (3 -10,000) on single crystal Ge targets. For specific laser parameters, both low and high frequency LIPSS are found together, which are oriented perpendicular to each other. Study of polarization dependence of LIPSS revealed that orientation and symmetry of interaction could be controlled by rotating polarization of laser pulses. Low frequency LIPSS formation was consistent with surface plasmon coupling of laser pulses with excited Ge.

Paper Details

Date Published: 4 November 2014
PDF: 6 pages
Proc. SPIE 9237, Laser-Induced Damage in Optical Materials: 2014, 92371S (4 November 2014); doi: 10.1117/12.2068254
Show Author Affiliations
Kyle Kafka, The Ohio State Univ. (United States)
Drake Austin, The Ohio State Univ. (United States)
Innovative Scientific Solutions, Inc. (United States)
Jian Cheng, The Ohio State Univ. (United States)
Harbin Institute of Technology (China)
Simeon Trendafilov, The Ohio State Univ. (United States)
Gennady Shvets, The Ohio State Univ. (United States)
Hui Li, Univ. of Texas at Austin (United States)
Allen Yi, Univ. of Texas at Austin (United States)
Cosmin I. Blaga, The Ohio State Univ. (United States)
L. F. DiMauro, The Ohio State Univ. (United States)
Enam Chowdhury, The Ohio State Univ. (United States)


Published in SPIE Proceedings Vol. 9237:
Laser-Induced Damage in Optical Materials: 2014
Gregory J. Exarhos; Vitaly E. Gruzdev; Joseph A. Menapace; Detlev Ristau; MJ Soileau; Detlev Ristau, Editor(s)

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