Accession Number:

AD1031239

Title:

Non-Linear Optical Studies of IR Materials with Infrared Femtosecond Laser

Descriptive Note:

Technical Report,15 Sep 2014,15 Nov 2016

Corporate Author:

Ohio State University Columbus United States

Personal Author(s):

Report Date:

2016-12-15

Pagination or Media Count:

18.0

Abstract:

Intense femtosecond mid-IR MIR pulses from 2 - 4 micron wavelength at a 1 kHz repetition rate were used to explore nonlinear effects into various MIR materials like germanium and indium antimonide, including laser induced damage, defect generation, laser induced periodic structure formation LIPSS etc. Indium Antimonide, an important IR detector material, was studied with 2 and 1.55 micron femtosecond MIR lasers. LIPSS like structures were generated by 2 micron pulses. MIR studies with Ge revealed that it supports formation of two different types of LIPSS, the low spatial frequency and the high spatial frequency LIPSS, depending on surface fluence of the MIR femtosecond pulses, with different mechanisms.

Subject Categories:

  • Lasers and Masers
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE