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Using Frequency Resolved Optical Gating for Optimization of Thermal Lensing Compensated Ti:Sapphire Femtosecond Laser System | ||
| Iraqi Journal of Applied Physics | ||
| Article 1, Volume 11, Issue 3, 2015, Pages 9-12 | ||
| Authors | ||
| Mukhtar Hussain; Tayyab Imran | ||
| Abstract | ||
| We report the characterization and optimization of thermal lensing compensated high peak power Ti:Sapphire femtosecond laser system, 4.0mJ pulse energy operating at 1-kHz repetition rate. Thermal lensing is compensated by employing convex folding mirrors and Peltier coolers while thermal eigenmode post-amplifier has introduced to retain the amplified laser pulse beam on the amplifier crystal. Single-shot second harmonic generation (SHG) frequency-resolved optical gating (FROG) diagnostic technique is employed to characterize the output compressed laser pulses. FROG image is monitored by charged-couple device (CCD) attached to the personal computer and optimization of the laser system is observed by FROG image in real time. Grating detuning is carried out in the compressor to optimize the minimum possible pulse duration and pulse of 30 fs duration is measured at the zero detuning scale. | ||
| Keywords | ||
| Ultrafast lasers; Sapphire laser; Chirped pulse amplification; Optical gating | ||
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