Browsing by Author "Imran, T."
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Item Self-compression of attosecond high-order harmonic pulses(2007) Kim, K.T.; Kang, K.S.; Park, M.N.; Imran, T.; Umesh, G.; Nam, C.H.Self-compression of attosecond high-order harmonic pulses in the harmonic generation medium itself has been demonstrated. The attosecond pulses were generated in an argon-filled gas cell and compressed by exploiting the dispersion characteristics of argon. Since the harmonic generation medium itself was used as the compression medium, continuous chirp control was easily achieved by adjusting the gas pressure. The optimized attosecond pulse was also the most intense, and its duration of 206 as was very close to the transform-limited value of 200 as. 2007 The American Physical Society.Item Self-compression of attosecond high-order harmonic pulses(2007) Kim, K.T.; Kang, K.S.; Park, M.N.; Imran, T.; Umesh, G.; Nam, C.H.Self-compression of attosecond high-order harmonic pulses in the harmonic generation medium itself has been demonstrated. The attosecond pulses were generated in an argon-filled gas cell and compressed by exploiting the dispersion characteristics of argon. Since the harmonic generation medium itself was used as the compression medium, continuous chirp control was easily achieved by adjusting the gas pressure. The optimized attosecond pulse was also the most intense, and its duration of 206 as was very close to the transform-limited value of 200 as. © 2007 The American Physical Society.