L. Yeh

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Single-cycle terahertz fields generated by coherent transition radiation from a relativistic electron beam are used to study the high field optical response of single crystal GaAs. Large amplitude changes in the sub-band-gap optical absorption are induced and probed dynamically by measuring the absorption of a broad-band optical beam generated by transition(More)
Sun-gazing is the main cause of solar retinopathy. A 20-year-old inebriated man lying in a park gazed at the sun for approximately three hours at noon. Forty-eight hours after sun-gazing, the patient experienced the symptoms of blurred vision, erythropsia, and central scotoma in the left eye. Visual acuity decreased from 6/6 to 6/60 in the left eye and(More)
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