Influence of pulse duration on the amorphization of GeSb thin films under ultrashort laser pulses | Zendy

S. M. Wiggins | Zendy; J. Solı́s | Zendy; C. N. Afonso | Zendy

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Influence of pulse duration on the amorphization of GeSb thin films under ultrashort laser pulses

Author(s) -

S. M. Wiggins,

J. Solı́s,

C. N. Afonso

Publication year - 2004

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.1759062

Subject(s) - streak camera , materials science , femtosecond , picosecond , nanosecond , pulse duration , ultrashort pulse , laser , optics , pulse (music) , supercooling , temporal resolution , femtosecond pulse shaping , physics , detector , thermodynamics

The influence of pulse duration on the dynamics of laser-induced amorphization of crystalline, 25-nm-thick, GeSb films, with a range of 100 fs to 6 ns, was investigated. This dynamics of the phase change was performed using real-time reflectivity measurements with picosecond time resolution with a streak camera. The time required for the completion of the transformation was found to be of the order ∼10-15 ns. The results show an increase in the pulse duration to 1.5-20 ps range, and a decrease up to the range of 400 ps in the transformation time.Peer Reviewe

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