Laser Physics and Laser Techniques.
Final rept. 1 Mar 84-28 Feb 86,
STANFORD UNIV CA EDWARD L GINZTON LAB OF PHYSICS
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This program develops new technologies for exploiting the ultrafast data transmission and measurement capabilities of lasers and applies these new techniques to current scientific problems in physics, chemistry, and ultrafast electronics. Several new techniques are developed for making ultrafast measurements with lasers, both using ultrashort light pulses in combination with novel detection mechanisms to make ultrafast measurements in the time domain, and also using a novel tunable laser induced grating method for making ultrafast measurements without pulses, working in the frequency domain. Using the latter approach, femtosecond resolution frequency domain lifetime measurements are made on chemical systems, including the important optical Kerr material CS. The first picosecond pulse time domain measurements are demonstrated using photoacoustic detection as a sensitive and flexible bulk and surface detection mechanism in liquids and solids flexible, noncontracting method for making picosecond and femtosecond measurements on a very wide variety of surfaces. A number of lifetime and damage studies are made semiconductor surfaces, and the formation of spontaneous surface ripples or stimulated Woods anomalies are explored picosecond laser pulses. An entirely new ultrafast photodetector concept is invented based on ultrafast diffusion driven charge transport, its experimental demonstration are being persued.
- Lasers and Masers
- Test Facilities, Equipment and Methods