Title :
Compact geometry for diode-pumped Cr:LiSAF femtosecond laser
Author :
Aoshima, Shin-ichiro ; Itoh, Haruyasu ; Tsuchiya, Yutaka
Author_Institution :
Central Res. Lab., Hamamatsu Photonics KK, Hamakita City, Japan
fDate :
2/1/1997 12:00:00 AM
Abstract :
A novel geometry for dispersion compensation in femtosecond lasers without specific cut of optical parts in a flat/Brewster angle or Gires-Tournots mirrors is demonstrated for attaining a compact diode-pumped Cr:LiSAF femtosecond pulse laser. In this geometry, the laser medium lies between the dispersion-compensation prism pair. This approach enables the laser to operate at variable repetition rates from 163 to 235 MHz keeping the pulsewidth less than 90 fs, where the value of the time-bandwidth product are not larger than 0.34. An 89 fs pulse duration generated at the 235 MHz repetition rate is, to our knowledge, the shortest pulse achieved in an all-solid-state Kerr-lens mode-locked laser operating above the 200 MHz repetition rate
Keywords :
aluminium compounds; chromium; compensation; geometry; high-speed optical techniques; laser mirrors; laser mode locking; lithium compounds; optical Kerr effect; optical dispersion; optical pumping; solid lasers; strontium compounds; 89 fs; 90 fs; Brewster angle; Gires-Tournots mirrors; LiSrAlF6:Cr; all-solid-state Kerr-lens mode-locked laser; compact diode-pumped Cr:LiSAF femtosecond pulse laser; compact geometry; diode-pumped Cr:LiSAF femtosecond laser; dispersion compensation; dispersion-compensation prism pair; femtosecond lasers; flat angle; fs pulse duration; laser medium; repetition rate; shortest pulse; time-bandwidth product; variable repetition rates; Diodes; Geometrical optics; Laser beam cutting; Laser mode locking; Optical pulse generation; Optical pulses; Optical resonators; Pump lasers; Solid lasers; Ultrafast optics;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.585820
