Title :
Generation of orange pulse laser in waterproof fluoride glass fibre with graphene thin film
Author :
Fujimoto, Yasutaka ; Suzuki, Takumi ; Ochante, R.A.M. ; Hirayama, Takatsugu ; Murakami, M. ; Shiraga, H. ; Yoshida, Manabu ; Ishii, O. ; Yamazaki, M.
Author_Institution :
Inst. of Laser Eng., Osaka Univ., Suita, Japan
fDate :
September 25 2014
Abstract :
Orange laser pulses were successfully generated in a Pr-doped waterproof fluoride glass fibre (Pr:WPFGF) using a graphene thin film as a saturable absorber (SA). Two pulse generation modes were observed: a continuous mode with 0.47 μs pulse duration with a 2.61 μs repetition period and a single giant pulse mode with 9.7 ns pulse duration. The peak wavelength was 603 nm. This result shows that a graphene thin film can be effective as an SA in the visible region, and in the future a visible ultra-short pulse laser with a modelocking technique may be demonstrated.
Keywords :
fibre lasers; fluoride glasses; glass fibres; graphene; laser mode locking; laser modes; optical pulse generation; optical saturable absorption; praseodymium; C; Pr-doped waterproof fluoride glass fibre; continuous mode; graphene thin film; mode-locking technique; orange pulse laser generation; peak wavelength; pulse generation modes; saturable absorber; time 0.47 mus; time 2.61 mus; time 9.7 ns; wavelength 603 nm;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.2302
