Polarisation characteristics of the harmonics and reflected radiation upon the interaction of 100-GW picosecond pulses with aluminium films

Journal Article · Thu Nov 30 04:00:00 EST 2000 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2000V030N11ABEH001847· OSTI ID:21442774

Ganeev, R A ^[1]; Chakera, J A; Raghuramaiah, M; Sharma, A K; Naik, P A; Gupta, P D ^[2]

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1. 'Akadempribor' Research and Production Association, Academy of Science of Uzbekistan, Tashkent (Uzbekistan)
2. Centre for Advanced Technology, Indore (India)

The generation of harmonics from a solid surface irradiated by 27-ps pulses (I{<=}1.5x10{sup 15} W cm{sup -2}) from a neodymium laser is studied. The conversion efficiency of p-polarised laser radiation was more than ten times greater than that of the s-polarised radiation for the second harmonic generation and more than one hundred times greater for the third harmonic generation. The optical rotation of the second harmonic generated by s- and p-polarised laser radiation is studied. The efficiencies of the second, third, and fourth harmonic generation were 2x10{sup -8}, 2x10{sup -10}, and 5x10{sup -12}, respectively. The intensities of the second, third, and fourth harmonics exhibit a power dependence on the laser radiation intensity with exponents equal to 1.5, 1.8, and 3.8, respectively. (interaction of laser radiation with matter. laser plasma)

• OSTI ID: 21442774
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 11 Vol. 30; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM
BEAMS
EFFICIENCY
ELECTROMAGNETIC RADIATION
ELEMENTS
FILMS
FREQUENCY MIXING
HARMONIC GENERATION
LASER RADIATION
LASERS
METALS
NEODYMIUM LASERS
POLARIZATION
POLARIZED BEAMS
PULSES
RADIATIONS
SOLID STATE LASERS
SURFACE TREATMENTS
THIN FILMS