Title :
Inscription of long-period fibre gratings by high-intensity femtosecond radiation at 211 nm
Author :
Kalachev, A.I. ; Nikogosyan, D.N. ; Brambilla, G.
Author_Institution :
Dept. of Phys., Univ. Coll. Cork
Abstract :
In this study we used the fifth harmonic of a femtosecond Nd:glass laser for long-period fibre gratings (LPFG) fabrication in a hydrogenated SMF-28 fibre. In this case, the total excitation energy of two-quantum excitation reaches the value of about 11.7 eV, which is significantly higher than the bandgap energy value of 7.1 eV for Ge-doped fused silica
Keywords :
diffraction gratings; germanium; high-speed optical techniques; laser materials processing; optical fibre fabrication; 11.7 eV; 211 nm; 7.1 eV; Ge-doped fused silica; bandgap energy; femtosecond Nd:glass laser; high-intensity femtosecond radiation; hydrogenated SMF-28 fibre; long-period fibre gratings fabrication; long-period fibre gratings inscription; total excitation energy; two-quantum excitation; Electromagnetic wave absorption; Fiber gratings; Fiber lasers; Laser excitation; Optical device fabrication; Photochemistry; Propagation losses; Refractive index; Silicon compounds; Ultrafast electronics;
Conference_Titel :
Lasers and Electro-Optics Europe, 2005. CLEO/Europe. 2005 Conference on
Conference_Location :
Munich
Print_ISBN :
0-7803-8974-3
DOI :
10.1109/CLEOE.2005.1568326
