WITec GmbH products

Raman spectra measurements at extremely low wavenumbers down to below 10 rel. cm-1. Provides access to additional information from Stokes and anti-Stokes Raman signals close to the Rayleigh line. specialized filter set available for a variety of laser wavelengths (488, 532, 633, and 785 nm).

Sample Positioning and Scanning Stages: WITec offers manual, stepper motor-driven and piezo-actuated stages to accommodate a wide variety of samples and applications.

StrobeLock is an extension for the WITec alpha300 microscope series, which enables time-correlated single photon counting (TCSPC) measurements. TCSPC records the time-resolved luminescence or fluorescence decay after pulsed stimulation. In Time-resolved Luminescence Microscopy (TLM), the intensity decay is recorded at each image pixel. Various parameters describing each decay can be determined, such as single- or even multi-exponential relaxation times. Images can then be color-coded according to any of the extracted parameters, revealing local differences in the emission behavior of a sample. For example, extracting the lifetime of fluorophores allows for Fluorescence Lifetime Imaging (FLIM). Combining the time-resolved data with Raman, AFM or SNOM images yields additional information on the investigated materials.

Advanced nanotechnology often requires accurate and reliable nano-manipulation or nano-lithography tools for precise surface structuring. The WITec DaVinci nanolithography package allows these kinds of experiments in AFM as well as in optical modes with an integrated laser shutter control.

Enclosure: Reduction of environmental interference from sources such as temperature fluctuations, air drafts and acoustic noise. Gas-phase control with air-tight option. Compliance with Laser safety Class 1 available. Optical, electronic and peripheral connection with sealed feed-throughs.

Automated microscope components enable remote control. Compact instrument footprint requires minimal space. Lasers, spectrometers, controller and PC are freely positionable outside enclosure. Software-driven routines accelerate sample turnover.