Spectrograph configurations for Raman and fluorescence applications by Princeton Instruments

Three configurations of Princeton Instruments' (Trenton, NJ) LS 785 NIR lens spectrograph are designed specifically for demanding Raman and fluorescence applications that require the highest throughput. The systems pair Princeton's high-performance PIXIS deep-depletion CCD cameras with its Acton Series LS 785 spectrographs. This, according to the company, enables ease of use and ease of setup.

One of the trio is optimized for best signal-to-noise ratio, one for highest spectral rate, and another for highest performance on a fixed budget.

"The LS 785 is an excellent choice for applications where Raman scattering is very weak and highest sensitivity is required," says Chris Draves, Princeton Instruments' Spectroscopy Group Manager.

The Acton LS 785 Series spectrographs feature gold-coated gratings for increased efficiency and tunable center wavelength adjustment to allow for different laser excitations including 785nm, 805nm or 830 nm. The company says that its proprietary lens design, which boasts 94% transmission through the combined lens sets and 65% total system throughput, is best in its class for throughput and has outstanding imaging performance. Princeton Instruments maintains complete supply chain management of the LS 785, eliminating any potential risk of system obsolescence.

Laser filtering is enabled by an optional edge filter holder that is easy to remove. A complete set of accessories for light input is available including a universal fiber adaptor that supports SMA, FC or 10mm ferrule connectors. Additionally, Princeton Instruments' liquid nitrogen cooled detectors can also be used for applications requiring long acquisition times.

More information:
Princeton Instruments' LS 785 NIR lens spectrograph

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