Products    /    Spectroscopy    /    Spectra CT UV-VIS-NIR CCD Based Stitched Scanning Spectrometer
Spectra CT UV-VIS-NIR CCD Based

Stitched Scanning Spectrometer

Model: HO-SP-3S300F

HOLMARC’s Model HO-SP-3S300F is a CCD based scanning spectrometer, rapidly scan a range of wavelengths and record light intensity at each wavelength. In this spectrometer, only 70nm wavelength range is covered in a single imaging, by making use of the entire 3648 pixels available in the CCD. This feature increases the resolution significantly. For obtaining spectra over full wavelength range, various spectral images are taken and stitched together using the software provided. Hence this device is named “Stitched Scanning Spectrometer”. It works in the wavelength range of 200 to 1050nm.

Holographic diffraction grating used in this spectrometer disperses light by diffracting different wavelengths at different angles and it is subsequently focused by a second concave mirror. The grating is positioned in such a way to get all the wavelength of light in to a linear CCD. The required wavelength range is selected by rotating angle of the grating. The mirror and slit positions remain fixed. It utilizes a computer controlled motorized turret for automatic grating and wavelength selection. Resolution and wavelength range of the spectrometer is depends on the selection of grating.

Scanning is possible for a desired wavelength range. This feature saves time whenever full wavelength range scan is not necessary.

Electronics is packaged inside the housing and has RS-232 interface to the computer. For USB interface a Serial to USB converter is connected to the RS-232 output and a USB converter driver needs to be loaded on the computer so that it will recognize the USB interface as a virtual RS-232 serial port. There is also a fast and interactive graphical software interface allowing full control of all the spectrograph functions.

        Optical path configuration :     Czerny-Turner type
        Focal Length :     300 mm
        Aperture Ratio :     f / 6
        Port Configuration :     Single I / P   &  O / P (Customizable)
        Dispersion element :     Holographic grating UV Optimized
        Grating density :     1200
        Grating Size :     50 x 50 mm
        Relative diffraction efficiency :     65 %
        Wavelength range :     200 - 1100 nm
        Resolution with CCD (FWHM) :     ~ 0.058 nm
        Band width per pixel :     ~ 0.029 nm
        Slit width :     0 - 3 mm, Micrometer controlled
        Slit Resolution :     10 Micron
        Dispersion :     2.459 nm / mm   @   350nm
        CCD wavelength coverage :     70 nm
        CCD Sensor :     B / W line Sensor
        Number of Pixels :     3648
        Pixel Size :     8 x 200 micron
        Pixel Output Clock :     0.5 MHz
        ADC resolution :     16 bits
        Exposure Time Range :     0.1ms - 6,500ms
        Frame Rate :     Up to 138 scans / second
        Interface :     USB 2.0
        Compatibility :     Windows 2000 XP or higher
    Default slit width is 20 μm
    Spectral Coverage : approximate, use for reference purpose only
        High resolution spectral analysis
        High wavelength accuracy
        200 - 1100nm spectral range in a single scan
        Optional photomultiplier and silicon photo diode detector
        Adjustable Input slit to control the spectral resolution
        Selectable wavelength range
        RS-232 and USB to serial port extension module
        Optional optical port with optical output and detector input ports

Heavy duty aluminium construction is used for stability with respect to vibration and thermal effects. Multiple accessory options allow the user to configure the system for custom applications. The basic system and accessories are designed in modular fashion. More and more accessories can be added as the applications expand.

It can be used for spectroscopic study of LED’s, optical filters, general emission and absorption experiments etc.

Dual exit port configured model is also available. It enables simultaneous mounting of different detectors. It helps to work with different wavelength region. The Software allows usage of all the functions of each device independently. All systems can be made completely automated and PCcontrolled.

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