Efficient coupling of high-intensity subpicosecond laser pulses into solids

Journal Article · Sun Mar 07 23:00:00 EST 1993 · Applied Physics Letters; (United States)

DOI:https://doi.org/10.1063/1.108797· OSTI ID:6748524

Murnane, M M; Kapteyn, H C ^[1]; Gordon, S P ^[2]; Bokor, J ^[3]; Glytsis, E N ^[4]; Falcone, R W ^[2]

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1. Department of Physics, Washington State University, Pullman, Washington 99164-2814 (United States)
2. Department of Physics, University of California at Berkeley, Berkeley, California 94720 (United States)
3. AT T Bell Laboratories, Holmdel, New Jersey 07733 (United States)
4. School of Electrical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)

We demonstrate a new technique for enhancing the absorption of high-intensity, ultrashort-duration laser pulses by solids. Targets consisting of gold gratings and gold clusters were found to absorb greater than 90% of the incident high-intensity laser light. This is in contrast to less than 10% absorption by flat surfaces. As a result of this strong coupling of the laser to a high-density plasma, conversion efficiency of laser energy to x rays of greater than 1% was observed for x rays above 1 keV. Efficiency of nearly 25% was observed for emissions greater than 30 eV. These conversion efficiencies are more than an order of magnitude greater than those measured from flat targets.

• OSTI ID: 6748524
• Journal Information: Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 62:10; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

665300* -- Interactions Between Beams & Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTIVITY
ATOMIC CLUSTERS
CHEMICAL ANALYSIS
CONVERSION
COUPLING
EFFICIENCY
ENERGY CONVERSION
EQUIPMENT
GRATINGS
IRRADIATION
LASER TARGETS
LASER-PRODUCED PLASMA
NONDESTRUCTIVE ANALYSIS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PLASMA
PULSED IRRADIATION
RADIATION SOURCES
TARGETS
X-RAY EMISSION ANALYSIS
X-RAY EQUIPMENT
X-RAY SOURCES