Welcome to ULTRA FAST LASER FACILITY at Arizona State University

Ultrafast Laser Spectroscopy and Imaging Facility is housed in several laboratories (PS-B348, PS-A2C/D, and PS-A2E) in the Department of Chemistry and Biochemistry. The facility is specialized in the development and application of time-resolved laser spectroscopy to biological and chemical research. It provides advanced laser technologies and instruments for spectroscopic and imaging measurements to observe chemical reactions in real time with temporal resolution down to fs time scales and spatial resolution and sensitivity to the point where single molecule signals are detectable.

The femtosecond spectroscopy part of the facility consists of several solid-state-laser pumped femtosecond mode-locked Ti:Sapphire lasers coupled with transient absorption and fluorescence spectrometers, providing users with a broad range of excitation and probe wavelength for kinetic measurements with femtosecond to picosecond time resolutions.

The single molecule microscopy part of the facility consists of both pulsed and CW excitation lasers, a confocal microscope base, high numerical aperture objective lens, and a sensitive detection system, which operates in single photon counting mode. The optics are designed such that the observation volume is extremely small, a few femtoliters or less. Detection of single molecules is achieved by either diffusion mode or surface mode.