Generation of ultra-broadband pulses in the near-IR by non-collinear optical parametric amplification in potassium titanyl phosphate.
Non-collinear optical parametric amplification in potassium-titanyl phosphate (KTP) pumped with 800 nm pulses is reported. Broadband phase matching is achieved with non-collinear geometry and a slightly divergent signal seed. This enables a gain bandwidth up to approximately 2500 cm(-1) in near-IR region. Introducing a chirp into the pump pulse makes it possible to amplify the white light seed in a broad spectral region from approximately 1050 to approximately 1400 nm simultaneously. Pulse compression to sub-40 fs is readily achieved, while the spectrum should support approximately 8.5 fs pulses. Angular dispersion of the broadband output is discussed.
Department of Chemistry, Temple University, Philadelphia, PA 19122, USA.
Oleksandr
O
Isaienko
Eric
E
Borguet
D000669:Amplifiers, Electronic; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007259:Infrared Rays; D053844:Lasers, Solid-State; D055095:Optics and Photonics / Q000295:instrumentation*; D009991:Oscillometry / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*