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Title: Measuring single-shot, picosecond optical damage threshold in Ge, Si, and sapphire with a 5.1-μm laser

Journal Article · · Optical Materials Express
DOI:https://doi.org/10.1364/OME.5.002835· OSTI ID:1229525
 [1];  [2];  [3];  [1];  [3];  [1];  [3];  [2];  [1]
  1. RadiaBeam Technologies, LLC, Santa Monica, CA (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Univ. of California, Los Angeles, CA (United States)

Optical photonic structures driven by picosecond, GW-class lasers are emerging as promising novel sources of electron beams and high quality X-rays. Due to quadratic dependence on wavelength of the laser ponderomotive potential, the performance of such sources scales very favorably towards longer drive laser wavelengths. However, to take full advantage of photonic structures at mid-IR spectral region, it is important to determine optical breakdown limits of common optical materials. To this end, an experimental study was carried out at a wavelength of 5 µm, using a frequency-doubled CO2 laser source, with 5 ps pulse length. Single-shot optical breakdowns were detected and characterized at different laser intensities, and damage threshold values of 0.2, 0.3, and 7.0 J/cm2, were established for Ge, Si, and sapphire, respectively. As a result, the measured damage threshold values were stable and repeatable within individual data sets, and across varying experimental conditions.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
SC00112704
OSTI ID:
1229525
Report Number(s):
BNL-111611-2015-JA; R&D Project: KBCH139; KB0202011
Journal Information:
Optical Materials Express, Vol. 5, Issue 12; ISSN 2159-3930
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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Cited By (2)

Nonlinear absorption properties of silicene nanosheets journal March 2018
Parametric generation and characterization of femtosecond mid-infrared pulses in ZnGeP_2 journal January 2016

Figures / Tables (4)