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Ultrashort-pulsed MM-Wave Laser Radiation ( 1.22-mm, 5-ns, ~ 50-kW )

Experiment in Progress: Detection of Longitudinal Acoustic Phonons Resonantly Excited in Si-Doping Superlattices by Pulsed Millimeter-Wave Laser Radiation. Uniaxial Stress Apparatus ( ~ 1-kBar). Front Face: Si Doping Superlattice (5 x 10 12 cm -2 ). 246-GHz LA Phonon.

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Ultrashort-pulsed MM-Wave Laser Radiation ( 1.22-mm, 5-ns, ~ 50-kW )

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  1. Experiment in Progress: Detection of Longitudinal Acoustic Phonons Resonantly Excited in Si-Doping Superlattices by Pulsed Millimeter-Wave Laser Radiation Uniaxial Stress Apparatus ( ~ 1-kBar) Front Face: Si Doping Superlattice (5 x 1012 cm-2) 246-GHz LA Phonon Si:B (5 x 1013 cm-3) Substrate ( Piezophonon Spectroscopy) Ultrashort-pulsed MM-Wave Laser Radiation ( 1.22-mm, 5-ns, ~ 50-kW ) 34.5-nm period Rear Face: Granular Aluminum Bolometer: Straight Link ( 50-nm x 10 micron x 20 micron) Front Face: Small-Period Niobium Grating Coupler (Line: 7 micron, Space: 3 micron) 5 x 7 x 0.5 mm Sample Immersed in LHe @ ~1.8K

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