WITec, specialist in
high-resolution optical and scanning probe microscopy, introduces the
"Ultrafast Raman Imaging Option" for the alpha300 R Confocal Raman
Microscope. With this option the acquisition time for a single Raman
spectrum can be as low as 1.7 milliseconds. As a Confocal Raman image
typically consists of tens of thousands of spectra, the new option
reduces the total acquisition time for a complete image to only a few
minutes.
For example, a complete hyperspectral image consisting of 250
x 250 pixels = 62,500 Raman spectra can be recorded in less than two
minutes. The latest spectroscopic EMCCD detector technology combined
with the high throughput optics featured in the alpha300 R Confocal
Raman Imaging System are the keys to this improvement. The new option
reduces the overall experiment duration and delivers more valuable
Raman data in a given time, thereby reducing the total cost of
ownership of the system. The improvement in sensitivity can also be
advantageous for delicate and precious samples requiring the lowest
possible levels of excitation power. Time-resolved investigations of
fast dynamic processes can also benefit from the ultrafast spectral
acquisition times.
"With this imaging option, WITec sets a new cutting edge
standard in acquisition time and sensitivity for confocal Raman
Imaging". says Dr. Olaf Hollricher, WITec Managing Director Research
and Development. " From now on, hyperspectral Raman Imaging with full
spectral information at each image pixel is accessible in only a matter
of minutes."
The new Ultrafast Raman Imaging method is available as an
optional feature of the alpha300 R confocal Raman Microscope and the
confocal Raman imaging upgrades of the alpha300 AFM and SNOM series. In
Confocal Raman Imaging, a complete Raman spectrum is acquired at each
image pixel. By evaluating dedicated peak characteristics, Raman images
can be generated, revealing information on the distribution of the
sample's compounds, stress fields or crystallinity. Typical
applications for this nondestructive technique can be found in
bio-medical and pharmaceutical research, in semiconductors and
materials science as well as in nanotechnology.