Triple-Spectrometer

Most flexible Spectrometer-System on the market

The multitude of possible setup-configurations enabled a wide field of applications with only one device


Maximum straylight-rejection

For low-frequency Raman Measurements down to 5 cm-1 or less @ 532nm excitation


Excellent spectral resolution

Down to 0.1 cm-1 FMHM (at 633 nm)


 Superior Imaging Quality

Image corrected optics enable great imaging quality for multi-track applications


Easy Software Switch between Additive and Subtractive Dispersion Modes

The system may be used in high-resolution (additive) modes and bandpass (subtractive) modes

 

 

Features

•    Deep UV to IR wavelength range

•    High spectral resolution, i.e. FWHM < 0.1 cm-1 at 633 nm (TR777 in additive mode)

•    Low frequency Raman measurements down to 5 cm-1 or less, depending on sample

•    Operable for unlimited amount of laser wavelength in the range from DUV to NIR

•    Useful for tunable laser-excitation

•    Easy software-switch between "Additive" and "Subtractive" Dispersion-Mode

•    Simultanious Stokes / Anti-Stokes Measurements

•    Easy switch between Triple- and Single-Stage Operations (with optional Bypass-enhancement)   

 

•    Additive & Subtractive Dispersion

Additive-Mode

 

         In additive dispersion-mode each stage of the

         spectrometer-system disperses the spectrum of the

         incoming light. So each stage adds an additional

         dispersion.

         The first monochromator stage disperses the

         spectral radiation into separate wavelength

         components, allowing a specific spectral window

         to enter the next stage. The same way as the

         second stage, the third stage adds a third

         dispersion to the spectrum which is finally coupled

         to a detector in the last stage with even a lower

         level of stray-light.

         The possible resolution is as high as for a single

         spectrometer with a focal length which is eaqual to

         the sum of the focal length of the 3 stages.

Subtractive-Mode

 

In subtractive mode, the first and the second stages of spectrometer work as a tunable bandpass filter to allow only the desired portion of spectrum to pass through and  reducing stray light levels .

A polychromatic light enters the first stage through the entrance slit and is dispersed by the first grating. The intermediate Slit acts as a bandpass filter passing only the light between wavelengths λ1 and λ2. The grating in the second Stage recombines all the dispersed light and focuses it into the entrance slit of the third stage, producing again a polychromatic light limited to the spectral range between wavelengths λ1 and λ2.

 

 

•    Multiple configurations

 

A variety of configuration enables a wide field of applications. Up to four input ports and four output ports provide a wide range of different system setups.
The additive or subtractive arrangement of the double monochromator stage can be selected by software. Switching between additive and subtractive mode is done inside the first two Stages without any need of an additional optic.
So the Double Monochromator Stage can be used together with the last stage as a Triple system for Raman Spectroscopy.

Setup for Micro and Macro Raman Spectroscopy
in Triple additive and subtractive Mode

 

It can also be used as an excitation stage for Fluorescence and Photoluminescence and the emission can be detected by the last stage of the system.

Setup for Photoluminescence & Fluorescence

 

Setup to run three experiments simultaneously

 

Also a Bypass system is available to switch the entrance beam between the entrance slit of the first and third stage of the TriVista