The Astrella / Astrella HE from Coherent is an Ultrafast Ti: Sapphire Amplifier that operates at a wavelength from 780 to 820nm. It delivers up to 9.5 W of power with more than 9 mJ pulse energy (1-5 kHz) and a pulse width of 35 to 100fs. It has an excellent beam quality of 1.25. This amplifier is HASS verified for quality and reliability. It includes an oscillator and a pump laser for performance overhead featuring a sealed stretcher/ compressor section with advanced dispersion management for clean, short pulses. The amplifier is an ideal solution for spectroscopy (time-resolved, THz and multi-dimensional), fs Micromachining, surface SFG/SHG, stimulated raman scattering applications.