Abstract
We report a simple approach to amplify Ti:sapphire femtosecond pulses to moderate energy levels by a chirped regenerative amplifier. The seed pulses are broaden naturally because of the material dispersion of system components in regenerative cavity. The off-focusing Ti: sapphire crystal avoids effectively the optical damage. It sustains amplification over a wavelength range from 775 nm to more than 810 nm with a birefringent filter and an oscillation bandwidth of 7.7 nm, and produces 2.1 ps chirped output pulse energy of 100 μJ at 1.1-mJ pumping energy. This system shows good performances in stability and efficiency with the benefits of two thin-film polarizers and TEMoo mode pumping laser.
| Original language | English |
|---|---|
| Pages (from-to) | 225-227 |
| Number of pages | 3 |
| Journal | Chinese Optics Letters |
| Volume | 1 |
| Issue number | 4 |
| State | Published - Apr 2003 |
| Externally published | Yes |