Title :
High-energy broadband regenerative amplifier for chirped-pulse amplification
Author :
Yanovsky, V. ; Felix, C. ; Mourou, G.
Author_Institution :
Ultrafast Optical Sci., Michigan Univ., Ann Arbor, MI, USA
Abstract :
Summary form only given. A typical meter size linear Ti:sapphire regenerative amplifier has submillimeter mode size and output energy of 1-10 mJ limited by saturation fluence of Ti:sapphire (0.9j/cm/sup 2/) and intracavity losses. Subsequent amplification to joule scale energy requires a saturated gain of 100-1000 which is hard to reach with a single multipass amplifier so multiple stages of multipass amplifiers are used resulting in beam quality degradation and overall complexity of the laser system. A ring resonator with an intracavity lens was used in a high-energy/large-mode regenerative amplifier as such a cavity has a larger mode size compared with a linear one with the same footprint. However, for broadband 20-30 femtosecond lasers, only reflective optics can be used to avoid chromatic aberrations.
Keywords :
laser beams; laser cavity resonators; laser mirrors; laser modes; laser stability; ring lasers; sapphire; solid lasers; titanium; 1 to 10 mJ; 20 to 30 fs; Ti:sapphire; beam quality degradation; chromatic aberrations; intracavity lens; intracavity losses; joule scale energy; meter size linear Ti:sapphire regenerative amplifier; multipass amplifier; output energy; reflective optics; ring resonator; saturated gain; submillimeter mode size; Broadband amplifiers; Chirp; Degradation; Laser beams; Laser modes; Lenses; Optical amplifiers; Optical ring resonators; Ring lasers; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO '01. Technical Digest. Summaries of papers presented at the Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-662-1
DOI :
10.1109/CLEO.2001.947529
