Can the transformation time in phase change optical recording be improved by using femtosecond laser pulses?

Author

Solis, J. ; Wiggins, S.M. ; Afonso, C.N.

Author_Institution

Inst. de Opt., CSIC, Madrid, Spain

fYear

2003

fDate

27-27 June 2003

Firstpage

742

Abstract

Nonstoichiometric, Sb-rich, amorphous thin films, such as Sb_xGe_1-x with x>0.85 have been demonstrated to be promising candidates for the development of ultrashort laser pulse driven rewritable phase change optical disks. In this work we have investigated the joint influence of the film thickness, wavelength and pulse duration on the transformation time between the crystalline and the amorphous phases of GeSb films under picosecond and femtosecond laser pulses aiming to find routes for further improvements of the transformation time.

Keywords

germanium compounds; high-speed optical techniques; laser beam effects; optical films; optical materials; optical storage; GeSb; Sb/sub x/Ge/sub 1-x/; amorphous thin films thickness; crystalline GeSb films; femtosecond laser pulses; phase change optical recording; transformation time; ultrashort laser pulse driven rewritable phase change optical disks; Amorphous materials; Crystallization; Laser transitions; Optical films; Optical pulses; Optical pumping; Optical recording; Pulse amplifiers; Pump lasers; Ultrafast optics;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on

Conference_Location

Munich, Germany

Print_ISBN

0-7803-7734-6

Type

conf

DOI

10.1109/CLEOE.2003.1313819

Filename

1313819