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EMCCD Camera for Spectroscopy

Photonics.com
Jan 2011
Princeton InstrumentsRequest Info
 
TRENTON, N.J., Jan. 28, 2011 — A professional-grade electron multiplying (EM) CCD camera for spectroscopy applications has been unveiled by Princeton Instruments. The ProEM:1600, the latest addition to the ProEM line, uses proprietary eXcelon technology that reduces the interference fringes (i.e., etaloning effect) that have made back-thinned EMCCDs unusable in the near-infrared, and increases the sensitivity of the detector in the UV, blue and NIR spectral regions.

The camera features 16-µm pixels in 1600 × 200 and 1600 × 400 formats. The high-speed, electron-multiplying mode captures fast dynamics, and the traditional CCD mode delivers ultralow read noise for high-precision photometry. The 6.67-MHz readout rate and 1.5-µs vertical shift time produce acquisition rates of >3000 spectra/s.

Applications include scanning confocal Raman spectroscopy, hyperspectral imaging and single-molecule spectroscopy. A new software feature virtually eliminates frame-to-frame instability, even at high spectral rates.

The camera includes a Bias Active Stability Engine, proprietary Noise Suppression technology and OptiCAL on-demand EM gain calibration via a built-in light source. A hardware-generated time stamp on each frame takes the guesswork out of time-resolved photometry.

The all-metal-seal vacuum design delivers deep thermoelectric cooling and low dark current, and vacuum performance is guaranteed for the lifetime of the camera. It is cooled with air, liquid or a combination of the two. For vibration-sensitive applications, maximum cooling can be achieved using liquid recirculation, eliminating fan vibration.

The latest Gigabit Ethernet interface enables remote operation via a single cable without the need for custom frame grabbers. The camera operates on 32- and 64-bit Microsoft Windows operating systems and is fully supported under LightField, Princeton Instruments’ 64-bit data acquisition software that features the patent-pending IntelliCal spectral calibration routine.


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GLOSSARY
hyperspectral imaging
Methods for identifying and mapping materials through spectroscopic remote sensing. Also called imaging spectroscopy; ultraspectral imaging.
optical
Pertaining to optics and the phenomena of light.
photometry
The science of the measurement of light intensity, where "light'' refers to the total integrated range of radiation to which the eye is sensitive. It is distinguished from radiometry in which each separate wavelength in the electromagnetic spectrum is detected and measured, including the ultraviolet and infrared.
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