The Astrella USP from Coherent Corp. is an Ultrafast Ti:Sapphire Fiber Optic Amplifier that operates at a wavelength of 795 nm - 805 nm. It has a power stability of up to 0.5 rms and pulse energy above 5 mJ & 7 mJ (at 1 kHz) & 1.6 mJ (at 5 kHz). This linearly or horizontally polarized fiber optic amplifier has a TEM00 spatial mode and beam quality factor (M2) below 1.25. It has a beam diameter of 11 mm (at 1 kHz & 5 kHz) and pointing stability of up to 10 μrad. This fiber optic amplifier has a repetition rate of 1 kHz & 5 kHz and pulse duration of less than 35 fs (at FWHM).
The Astrella USP uses Revolution-50 & Revolution-65 pump lasers and Vitara-S, Vitara-T, or Vitara-T-HP seed lasers. This optical amplifier has a contrast ratio above 1000:1 (pre-pulse) & 100:1 (post-pulse) and is HASS (Highly Accelerated Stress Screening) verified. It has a hands-free Vitara oscillator and STAR regen amplifier. This fiber optic amplifier is available in a package that measures 1247 mm x 1213 mm x 262 mm and is ideal for time-resolved spectroscopy, multidimensional spectroscopy, THz spectroscopy, fs micromachining, surface SFG/SHG, stimulated Raman scattering, high harmonic generation & EUV spectroscopy applications.