Ramadurai, K.
, Cromer, C.
, Li, X.
, Mahajan, R.
and Lehman, J.
(2007),
Foam-based optical absorber for high-power laser radiometry, Applied Optics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32764
(Accessed October 15, 2025)
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Foam-based optical absorber for high-power laser radiometry
Published
Author(s)
, , , Roop Mahajan,
Abstract
We report damage threshold measurement results for novel absorbers comprised of either liquid-cooled silicon carbide or vitreous carbon foams. The measurements demonstrate damage thresholds up to 1.6×10^+4 W/cm2 at an incident circular spot size of 2 mm with an absorbance of 96 % at 1.064 υm. We present a summary of the damage threshold as a function of the water flow velocity and the absorbance measurements. We also present a qualitative description of a damage mechanism based on two-phase heat transfer between the foam and the flowing water.Citation
Applied Optics
Volume
46
Issue
34
Pub Type
Journals
Download Paper
Keywords
foam, laser damage, laser radiometry
Citation
Issues
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Created December 1, 2007, Updated January 27, 2020