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The Confocal Scanning Laser Microscope with Ramen spectroscopy uses laser light in an optical configuration that has an extremely narrow depth of focus – allowing it to offer high-resolution optical imaging with the ability to do optical sectioning.
It is possible to view visual sections of tiny structures which would normally be too difficult to see.
- Partner:UK Atomic Energy Authority
- Facility:Materials Research Facility (MRF)
- Availability:Available
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Detailed Description
Raman spectroscopy uses a laser to probe a sample to investigate the roto-vibrational states with in it, these can inform on chemical properties, chemical identification, bonding states, stress, etc. The laser light is absorbed by the sample which is then re-emitted with a slightly different wavelength, this is know as the Raman shift. The confocal microscope system it is able to track the height of the sample and interpret it to measure surface topography. This then allows 3D images to be constructed. The system has additional capabilities in the form and an Atomic Force microscope, AFM, and a Scanning Near Field Optical Microscopy, SNOM, options as well as an environmental stage for controlled atmosphere or vacuum and temperatures up to 1500°C.
Uses/Applications
It can perform chemical analysis of unknown samples. Determination of stresses in solid materials. Suitable for ceramics, crystals. plastics,, graphite, corrosion products, organic materials, gases and liquids.
Witec Alpah 300 ARS. Confocal microscopy in in reflection mode, Fluorescent and Raman spectroscopy. Large area optical mapping: up to 25×25 mm. 3D layer mapping. Automated sample positioning: by X, Y and Z axes. Excitation laser wavelengths: 457nm, 532nm, 633nm. Spectral resolution: 0.72 cm-1. Detector: EMCCD camera. 600 or 1800l/mm gratings.
Linkam TS1500 Environmental stage capable of in-situ controlled temperature studies up to 1500°C @200°C/min ramp rates. Choice of purge atmosphere or vacuum available.