Products    /    Spectroscopy    /    Spectra UV-VIS-NIR Quasar Series Scientific Monochromators
Spectra UV-VIS-NIR Quasar Series

Scientific Monochromators

HO-SP-SQR Series
Fully automated & fast
Stiched & continuous scanning

HOLMARC’s Spectra Quasar Series Monochromators Model : HOSP-SQR500FA & HO-SP-SQR300FA are fully automated, triple grating instruments with dual output port while Models HO-SPSQR500F & HO-SP-SQR300F are single grating instruments with single output port. All the four models are designed for fast, automated and continuous scanning over broad spectral range. The angular position of the grating is adjusted by the use of sine drive mechanism so that only the required wavelength of light is passed through the exit slit and all other wavelengths are blocked, without changing the positions of mirrors and slits.

Spectra Quasar series monochromators are ideal choice for either single or multichannel detector to be used in many applications that require medium to high spectroscopic resolution with excellent stray light performance such as fluorescence, Raman, absorption and transmission. Spectra series monochromators are fully automated with microprocessor controls and can be interfaced with the device by using RS 232C serial port.

Input and output ports of the monochromator are fitted with precise, micrometer controlled variable slits. The software developed for the instrument has facilities for setting up and calibration as well. System accepts input data as wavelength or wave number. Various configurations of input and output ports are available with precision and long life time.

Precision stepper motor controlled rotation stage is used for driving the grating. Fine resolution for the grating stage is achieved by microstepping feature of the stepper motor drives. Wavelength selection is made much easier in automated system compared to manually adjusted versions.



    Spectra Quasar 500FA Monochromator Model : HO-SP-SQR500FA
        Spectra Quasar 500F Fully Automated Monochromator
        Optical Design :     Czerny-Turner
        Input Port :     Dual
        Output Port :     Dual (One for Monochromatic Light and other for single / multi channel spectral application)
        Port Selection Mechanism :     Integrated Motorized Flip Mirror based Mechanism
        Main Mirrors :     Parabolic type with Enhanced Aluminum Coating
        Focal Length :     500 mm
        Diameter :     68 mm  or  120 mm
        Aperture Ratio :     f / 5 (with 100 x 100mm grating)  or  f / 7.3 (with 68 x 68mm grating)
        Dispersion Element :     Holographic Grating
        Grating Size :     100 x 100 mm (Ruled Grating) Custom grating can be provided on request
        Grating Density :     1200 l / mm
        Wavelength Range :     200 - 1600 nm
        Diffraction Efficiency :     65 % (@ 532 nm)
        Dispersion :     1.426 nm / mm
        Resolution :     0.029 nm
        Mechanical Wavelength Range :     200 - 1600 nm (@ 1200 l/mm)
        Accuracy :     0.01 nm (with 1200-g/mm grating)
        Reproducibility :     ± 0.005 nm (with 1200-g/mm grating)
        Grating Mounting Design :     Triple Grating Turret Based (Can hold up to 3 Gratings)
        Mount Design :     Kinematic Top Adjustable Mounts
        Grating Rotation :     Front Surface Axis
        Output Port Size :     30 mm
        Focal Imaging Plane :     30 x 12 mm
        Focal Plane Extension from the port :     42 mm
        Scanning Speed :     160 nm / second
        Step Size Resolution :     0.001 nm
        Input and Output Slit Design :     Integrated Motorized Slit or Manual Slit
        Slit Width Range :     0 - 3 mm
        Resolution :     1 Micron
        Shutter :     Integrated Motorized Active Shutter
        Filter unit :     Higher order cut off filter wheel
        Calibration :     Auto calibration for all motorized function
        (Manual Calibration can be activated for wavelength calibration)
        Software :     Windows based software to control all spectrometer functions and detector readings (with Labview interface support)
    Spectra Quasar 300FA Monochromator Model : HO-SP-SQR300FA
        Spectra Quasar 300F Fully Automated Monochromator
        Optical Design :     Czerny-Turner
        Input Port :     Single
        Output Port :     Dual (One for Monochromatic Light and other for single / multi channel spectral application)
        Port Selection Mechanism :     Integrated Motorized Flip Mirror based Mechanism
        Main Mirrors :     Parabolic type with Enhanced Aluminum Coating
        Focal Length :     300 mm
        Collimating Mirror Size :     50 x 50 mm
        Focusing Mirror Size :     75 x 50 mm
        Aperture Ratio :     f / 6 (with 50 x 50 mm grating)
        Dispersion Element :     Holographic Grating
        Grating Size :     50 x 50 mm
        Grating Density :     1200 l / mm   and   600 l / mm
        Wavelength Range :     200 - 2000 nm
        Diffraction Efficiency :     65 % (@ 532 nm)
        Dispersion :     2.29 nm / mm (52.13 cm - 1/mm)
        Resolution :     0.046 nm
        Mechanical Wavelength Range :     200 - 2000 nm (@ 1200 l/mm)
        Accuracy :     0.05 nm (with 1200-g/mm grating)
        Reproducibility :     ± 0.001 nm (with 1200-g/mm grating)
        Grating Mounting Design :     Dual Grating Turret Based
        Mount Design :     Kinematic
        Grating Rotation :     Front Surface Axis
        Focal Imaging Plane :     30 x 12 mm
        Focal Plane Extension from the port :     20 mm
        Scanning Speed :     160 nm / second
        Step Size Resolution :     0.001 nm
        Input and Output Slit Design :     Integrated Motorized Slit or Manual Slit
        Slit Width Range :     0 - 3 mm
        Resolution :     1 Micron
        Shutter :     Integrated Motorized Active Shutter
        Filter unit :     Higher order cut off filter wheel
        Calibration :     Auto calibration for all motorized function
        (Manual Calibration can be activated for wavelength calibration)
        Software :     Windows based software to control all spectrometer functions and detector readings (with Labview interface support)
    Spectra Quasar 500F Monochromator Model : HO-SP-SQR500F
        Optical Design :     Czerny-Turner
        Input Port :     Single
        Output Port :     Dual (One for Monochromatic Light and other for single / multi channel spectral application)
        Main Mirrors :     Parabolic type with Enhanced Aluminum Coating
        Focal Length :     500 mm
        Aperture Ratio :     f / 10 (with 50 x 50mm grating)
        Dispersion Element :     Holographic Grating
        Grating Density :     1200 l / mm
        Wavelength Range :     200 - 1600 nm
        Diffraction Efficiency :     65 % (@ 532 nm)
        Dispersion :     1.426 nm / mm
        Resolution :     0.029 nm
        Mechanical Wavelength Range :     200 - 1600 nm (@ 1200 l/mm)
        Accuracy :     0.01 nm (with 1200-g/mm grating)
        Reproducibility :     ± 0.005 nm (with 1200-g/mm grating)
        Grating Mounting Design :     Single Grating
        Grating Rotation :     Front Surface Axis
        Grating Holding Sizes :     50 x 50 mm,   68 x 68 mm   (Grating adaptor will be provided)
        Grating Removal Port :     Yes
        Output Port Size :     30 mm
        Focal Imaging Plane :     30 x 12 mm
        Focal Plane Extension from the port :     42 mm
        Slit Width Range :     0 - 3 mm (Manual)
        Resolution :     1 Micron
        Filter unit :     Higher order cut off filter wheel
        Software :     Windows based software to control all spectrometer functions and detector readings (with Labview interface support)
    Spectra Quasar 300F Monochromator Model : HO-SP-SQR300F
        Optical Design :     Czerny-Turner
        Input Port :     Single
        Output Port :     Dual (One for Monochromatic Light and other for single / multi channel spectral application)
        Main Mirrors :     Parabolic type with Enhanced Aluminum Coating
        Focal Length :     300 mm
        Collimating Mirror Size :     50 x 50 mm
        Focusing Mirror Size :     75 x 50 mm
        Aperture Ratio :     f / 6 (with 50 x 50 mm grating)
        Dispersion Element :     Holographic Grating
        Grating Size :     50 x 50 mm
        Grating Density :     1200 l / mm
        Wavelength Range :     200 - 1600 nm
        Diffraction Efficiency :     65 % (@ 532 nm)
        Dispersion :     2.29 nm / mm   (52.13 cm - 1/mm)
        Resolution :     0.046 nm
        Mechanical Wavelength Range :     200 - 1600 nm (@ 1200 l/mm)
        Accuracy :     0.01 nm (with 1200-g/mm grating)
        Reproducibility :     ± 0.005 nm (with 1200-g/mm grating)
        Grating Mounting Design :     Single Grating
        Grating Rotation :     Front Surface Axis
        Grating Removal Port :     Yes
        Output Port Size :     30 mm
        Focal Imaging Plane :     20 x 12 mm
        Focal Plane Extension from the port :     50 mm
        Slit Width Range :     0 - 3 mm (Manual)
        Resolution :     1 Micron
        Filter unit :     Higher order cut off filter wheel
        Software :     Windows based software to control all spectrometer functions and detector readings (with Labview interface support)
        Can be used as stitched or continuous scanning spectrometer
        Micrometer adjustable slits to precisely control incoming light
        User specified gratings to meet specific applications
        Stepper motor scanning for precision wavelength positioning
        Internal shutter or filter wheel (Optional)
        Motorized slit (Optional)
        Custom configurations






Spectra UV-VIS-IR Light Sources

HOLMARC offers a number of light sources to cover the spectral range of 200 - 2000nm which can be mounted directly to our monochromators or can be used independently. With the appropriate adapters, some of the sources can be mounted to our monochromators along with an optical chopper or filter wheel. Additional adapters and interface kits are available for focusing and launching the light directly into optical fibers.



Detector Stages for Monochromators

Holmarc manufactures custom detector mounts and stages for your application. Please contact us with your custom requirements at


sales@holmarc.com    /    mail@holmarc.com

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