Title :
Double cladding structure in optical multimode fibers fabricated by a high-intensity femtosecond laser
Author :
Sung-Hak Cho ; Kumagai, H. ; Midorikawa, K. ; Obara, M.
fDate :
Aug. 30 1999-Sept. 3 1999
Abstract :
To understand the relationship between solid-density plasma formation and input intensity, a multimode optical fiber was used, in which the behavior of plasma formation for various input intensities could be studied in situ. We report the experimental observation of laser induced long plasma formation and bulk modification in a multimode optical fiber excited by a high intensity (above 10/sup 12/ W/cm/sup 2/) femtosecond Ti:sapphire laser.
Keywords :
laser materials processing; optical fibre cladding; optical fibre fabrication; optical self-focusing; refractive index; solid-state plasma; 1 W; 110 fs; bulk modification; double cladding structure; high intensity femtosecond Ti:sapphire laser; high-intensity femtosecond laser; input intensity; laser induced long plasma formation; multimode optical fiber; solid-density plasma formation; Fiber lasers; Optical fibers; Optical pumping; Optical refraction; Optical variables control; Power lasers; Refractive index; Solid lasers; Ultrafast electronics; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO/Pacific Rim '99. The Pacific Rim Conference on
Conference_Location :
Seoul, South Korea
Print_ISBN :
0-7803-5661-6
DOI :
10.1109/CLEOPR.1999.811637
