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Products: SpectraPro HRS Spectrographs and Monochromators

image of SpectraPro HRS Spectrographs and Monochromators

New, Versatile, High Resolution Imaging Spectrographs and Scanning Monochromators

For more than 25 years, SpectraPro spectrometers from Princeton Instruments have set new standards for reliable high-performance spectroscopy. Day in and day out, researchers around the world depend on these popular spectrographs and monochromators for a wide variety of scientific and industrial applications.

Building upon the legacy of these iconic research instruments, Princeton Instruments has now created an even more versatile, higher-resolution spectroscopy solution. New SpectraPro HRS imaging spectrographs are absolutely packed with the latest technology and are capable of facilitating just about any spectroscopy application imaginable.

Now available - SpectraPro HRS-750, 750mm focal length

SpectraPro HRS benefits include:

  • Exclusive AccuDrive™ grating drive system yields up to 3X improvement in wavelength accuracy
  • ResXtreme™ spectral deconvolution improves spectral resolution and SNR up to 60%
  • Most precise wavelength and intensity calibration with IntelliCal system
  • High spectral resolution PLUS reduced astigmatism
  • Multiple exit ports provide unrivaled versatility for multi-detector operation
  • Fully supported by 64-bit LightField software


Unrivaled versatility!

The SpectraPro HRS affords researchers truly unrivaled experimental versatility. Dual exit ports, each with a full 30 mm focal plane, permit mounting and operation of two array detectors (which could include any of Princeton Instruments’ CCD, EMCCD, ICCD, sCMOS, or InGaAs detectors) or enable the instrument to operate as both a monochromator and a spectrograph.



Applications for SpectraPro spectrometers include:

Raman spectroscopy | Fluorescence | Photoluminescence | Plasma emission | Absorption | Transmission | Laser-induced breakdown spectroscopy (LIBS) | Microspectroscopy



New ResXtreme spectral
deconvolution technology
  • Improves spectral resolution by up to 60%

  • Improves peak intensity of spectral lines by up to 60%

  • Provides up to a 60% improvement in spectral uniformity at all CCD positions

  • Conservation of Energy: Maintains total signal under the peak

  • Improves signal-to-noise performance

  • Saves original spectral information, allowing data to be recalled without ResXtreme

  • Is included with all SpectraPro HRS spectrographs that are purchased with Princeton Instruments LightField software!*

* LightField required for operation of ResXtreme.






Full-size dual focal planes for multiple array detectors
  • Permits mounting and operation of two cameras
  • Choose from Princeton Instruments CCDs and InGaAs cameras for UV – SWIR coverage
  • Enables operation as both a monochromator and a spectrograph

  • Dramatically improves wavelength accuracy and repeatability
  • Outperforms previous scan systems - yields significant improvements in accuracy and reproducibility
  • Automatically identifies the turret and gratings installed on startup
  • Performs several optical alignment routines to insure accurate initialization
IntelliCal wavelength calibration achieves up to 10x greater wavelength calibration accuracy than conventional calibration methods, while IntelliCal intensity calibration removes unwanted instrument responses from spectral data. SpectraPro HRS spectrographs with IntelliCal ensure authentic spectroscopic data that can be published or shared across multiple user facilities.


High-efficiency Acton optical coatings
  • Acton #1900 enhanced-aluminum mirrors provide highest reflectivity from 193 nm to mid-IR
  • Optional Acton protected silver coatings provide an average > 98% reflectivity and increased throughput over conventional silver coatings
  • Optional gold coatings available for NIR


Powerful LightField software
  • Intuitive software package, with cutting-edge user interface
  • Provides complete control of entire spectroscopy system and experiment*
  • Controls SpectraPro HRS, Princeton Instruments’ cameras, spectral acquisition, data processing and more
* Software sold separately




SpectraPro HRS specifications and datasheets

Model Focal Length Aperture Ratio PMT Resolution* CCD Resolution** Linear
HRS-300 datasheet pdf 300 mm f/3.9 0.09 nm 0.07 nm or better 2.38 nm/mm
HRS-500 datasheet pdf 500 mm f/6.5 0.05 nm 0.05 nm or better 1.52 nm/mm
HRS-750 datasheet pdf 750 mm f/9.7 0.03 nm 0.03 nm or better 1.03 nm/mm

NOTE:  Please visit the SpectraPro page for 150 focal length models.

* with 1200 g/mm grating @ 435.8 nm and 10 micron slit width and 4 mm slit height | ** with ResXtreme and 1200g/mm grating @ 435.8nm 20 micron pixel, 20 micron slit width

Gratings and Grating Sets for SpetraPro HRS Series




Tip-Enhanced Raman Spectroscopy
TERS - Tip-Enhanced Raman spectroscopy

Laser-Induced Breakdown Spectroscopy
LIBS is considered one of the most convenient and efficient analytical techniques for trace elemental analysis in gases, solids, and liquids. LIBS spectra obtained by the Mars Curiosity Rover have confirmed that our sister planet could have harbored life

Absorbance, Reflectance and Transmission
A measure of the amount of light absorbed by a sample as a beam of light passes through it.

Fluorescence, Phosphorescence, and Photoluminescence Spectroscopy
Fluorescence, phosphorescence and photoluminescence occur when a sample is excited by absorbing photons and then emits them with a decay time that is characteristic of the sample environment.

General Raman
The most common application of Raman spectroscopy involves the vibrational energy levels of a molecule. Incident laser light in the UV, visible or NIR, is scattered from molecular vibrational modes.

Plasma Emission Spectroscopy
The different types of plasma emission spectroscopy can be categorized by how the plasma is generated. Spectra of nuclear fusion plasmas are used to ascertain the chemical species present and other properties.


L. Sortino, A. Tartakovskii et al.
W. Tillmann, A. Brümmer et al.
Investigation of the Tribofilm Formation of HiPIMS Sputtered MoSx Thin Films in Different Environments by Raman Scattering
Thin films, Magnetron Sputtering, Transition Metal Dichalcogenides, Material Science, Coating Technology
K. Lee, W. Cai et al.
Electrically Biased Silicon Metasurfaces with Magnetic Mie Resonance for Tunable Harmonic Generation of Light
Nanotechnology, Non-linear spectroscopy, Reflectivity measurements, Second Harmonic Generation, Electric Field Induced SHG - EFISH, Silicon Photonics
N. Jiang, Y. Zhang et al.
H. Tachibana, R. AZUMI et al.
Highly concentrated dispersion of methyl-terminated germanane by liquid exfoliation
Microspectroscopy, PL Spectroscopy, Material Science, Thin films
F. Berger, J. Zaumseil et al.
Brightening of Long, Polymer-Wrapped Carbon Nanotubes by sp3 Functionalization in Organic Solvents
Hyperspectral,PL Imaging,PL Spectroscopy,Material Science,Carbon Nanotubes
H. Yuan, D. Errandonea et al.
Putting the Squeeze on Lead Chromate Nanorods
Raman Spectroscopy,Material Science,Nanotechnology,Diamond Anvil Cells,High pressure science
T. Jiang, M. Raschke et al.
Ultrafast coherent nonlinear nanooptics and nanoimaging of graphene
NSOM,Material Science,Nanotechnology,2D Materials,Four-Wave-Mixing,Graphene,Nanophotonics,Plasmonics
M. Seitz, F. Prins et al.
Long-Term Stabilization of Two-Dimensional Perovskites by Encapsulation with Hexagonal Boron Nitride
Absorption,Fluorescence Spectroscopy,Material Science,2D Materials,Perovskites,Solar cells/photovoltaics
J. Valenta, M. Zacharias et al.
J. Horng, H. Deng et al.
Perfect absorption by an atomically thin crystal
Reflectivity measurements,Material Science,Physics,2D Materials,Transition Metal Dichalcogenides
H. Sugimoto, M. Fujii et al.
Forward to Backward Scattering Ratio of Dielectric–Metal Heterodimer Suspended in Almost Free-Space
Darkfield spectroscopy, Microspectroscopy, Nanotechnology, Nanophotonics
S. Park, W. Choe et al.
Origin of hydroxyl radicals in a weakly ionized plasma-facing liquid
Understanding the physical chemistry involving OH radicals using sensitive emission spectroscopy
P. Ran, S. Luo et al
Collision-mediated ultrafast decay of N2 fluorescence during fs-laser-induced filamentation
Ultrafast detection using gated and streak camera approaches.
C. Hwang, K. Jeong
Ag/Au Alloyed Nanoislands for Wafer-Level Plasmonic Color Filter Arrays
Measurement on thin film filters with transmission spectroscopy
J. Zuniga,Y. Mao et al.
Size, structure, and luminescence of Nd2Zr2O7 nanoparticles by molten salt synthesis
Characterization of Nanoparticles using Raman spectroscopy
J. Wang, S. Kena-Cohen et al.
E. Vander Ende, R. Van Duyne et al.
Physicochemical Trapping of Neurotransmitters in Polymer-mediated Gold Nanoparticle Aggregates for Surface-enhanced Raman Spectroscopy
Life Science and Physical Chemistry application using surface enhanced Raman measurements
X. Zhuo, H. Lin et al.
Colour routing with single silver nanorods
Nanophotonics, Plasmonics, Dark Field Scattering Spectroscopy
J. Dong, B. Liu et al
Transparent aerogel-like diamond nanofilms from glassy carbon by high pressure and high temperature
Thermometry for nanomaterial development by measuring blackbody spectrum in high pressure diamond anvil cell.
N. Zhang, Q. Song et al
All-optical control of lead halide perovskite microlasers
Nanophotonics, Optoelectronics, Emission Spectroscopy
F. Kumaki, T. Fuji
High harmonic generation in solids driven by sub-cycle mid-infrared pulses from laser filamentation
Sensitive emission spectroscopy of high harmonics generated in Si membrane with MIR pulses.
D. Liu, M. Jin et al
Effect of hydrogen bond on solvation dynamics of coumarin153 in cyclohexane-phenol solvent mixtures by time-resolved optical Kerr fluorescence
Pump probe spectroscopy using the optical Kerr effect investigating the physical chemistry of solutions.
R. Wulundari, Y. Einaga et al.
J. Choi, T. Majima et al.
Proton transfer accompanied with oxidation reaction of adenosine
Life Science, Biochemistry, DNA repair, Pulse Radiolysis, Time Resolved Resonance Raman, Ultrafast Spectroscopy
V. F. Boretskij, Y. G. Aftandilyants et al.
Plasma of Underwater Electric Discharges With Metal Vapors
OES-Optical Emission Spectroscopy, Plasma Physics and Monitoring, Nanomaterial Synthesis, Plasma in Liquids
S. Aghaeimeibodi, E. Waks et al.
A silicon photonic add-drop filter for quantum emitters
Silicon Integrated Photonics, Single Photon Sources, PL spectroscopy
A. McLean et al.
Quantification of Radiating Species in the DIII-D Divertor in the Transition to Detachment Using Extreme Ultraviolet Spectroscopy
Spectroscopic characterization of plasma in a Tokamak experiment using UV to NIR techniques.
X. Zhang, P. Jain et al.
In situ formation of catalytically active graphene in ethylene photo-epoxidation
SERS reveals process behind chemical conversion through a catalyst leading to development of new improved catalyst.
S. Krause, T. Vosch et al
Photon Energy Dependent Micro-Raman Spectroscopy with a Continuum Laser Source
Monochromator based tunable Raman excitation filter and detection of weak Raman signals
C. Ma, G. Yang et al
The optical duality of tellurium nanoparticles for broadband solar energy harvesting and efficient photothermal conversion
Te nanoparticles improve solar energy conversion. Probing using Dark Field microspectroscopy.
William A. Tisdale
High Repetition-Rate Femtosecond Stimulated Raman Spectroscopy with Fast Acquisition
The article presents design and construction of a time-resolved femtosecond stimulated Raman spectroscopy system built around a high repetition-rate Yb amplifier and discussed benefits and pitfalls that can be expected from such a system. The system included detection using a high-speed PI's 1024 pixel linear CMOS camera along with PI's 500mm spectrograph.
C. Dover, T. Schmidt et al.
Endothermic singlet fission is hindered by excimer formation
Time resolved PL spectroscopy reveals how to improve efficiency of photovoltaic devices.
L. Martin, J. Joos et al.
Microscopic Study of Dopant Distribution in Europium Doped SrGa2S4: Impact on Thermal Quenching and Phosphor Performance
Cathodoluminescence in an electron microscope detected by sensitive spectgroscopy helps to optimize luminescent materials for example for applications in happens when electrons that are hitting a material cause the emission/luminescence of photons. Here the emission is initiated with a scanning electron beam in an electron microscope. The background for this research is to optimize phosphors for LED devices that are necessary to obtain emission of white light for example. Electron microscopy and sensitive spectroscopy helps to get deeper insights and to optimize new luminescent materials for devices.
M. Rejhon, J. Kunc et al.
The electroluminescent properties based on bias polarity of the epitaxial graphene/aluminium SiC junction
Measurement of Electroluminescence of Graphene/SiC devices. These could be used as wavelength tunable LEDs.
K. Park, M. Raschke et al.
Radiative control of dark excitons at room temperature by nano-optical antenna-tip Purcell effect
In this article a monolayer of WSe2 is investigated by tip-enhanced photoluminescence with a gold tip moved very closely (around 1nm) to the material. This a) amplifies the PL signal and b) can be used to turn emission of certain PL transitions on and off.
C. Bradac, T. Volz, et al.
Room-temperature spontaneous superradiance from single diamond nanocrystals
Demonstraion of super radiance in the PL emission of NV centers in diamond
B. Bruhn, K. Dohnalova et al.
Multi-chromatic silicon nanocrystals
Si Nanocrystals are manipulated with electron irradiation that broadens their emission spectrum. Results are measured with photoluminescence and cathodoluminescence spectroscopy.
A. Wright, L. Herz et al.
Band-Tail Recombination in Hybrid Lead Iodide Perovskite
Time dependpent PL spectroscopy from the ns to ms timescale, helping to optimize materials for solar cell and laser applications.
A. Wright, L. Herz et al.
Band-Tail Recombination in Hybrid Lead Iodide Perovskite
Time dependpent PL spectroscopy from the ns to ms timescale, helping to optimize materials for solar cell and laser applications.
T. Yeh, C. Luo et al.
Ultrafast carrier dynamics in Ge by ultra-broadband mid-infrared probe spectroscopy
Probing the material science of Ge using a pump probe spectroscopy technique. Mid-IR probe is up converted and detected with a ProEM camera and SpectraPro spectrograph.
L. Chemartin, et. al.
Characterization of a high current pulsed arc using optical emission spectroscopy
A PI-MAX ICCD camera and an Acton SpectraPro 2750 spectrograph are utilized by researchers at Onera French Aerospace Lab and Universite Paris - Saclay.
R. Ganesan, M.M.M. Bilek et al
Optimizing HiPIMS pressure for deposition of high-k (k = 18.3) amorphous HfO2
OES - Optical Emission Spectroscopy, Plasma Physics and Monitoring, Thin Films, Ultrafast Spectroscopy

Application Notes

Cherenkov Emission Imaging and Spectroscopy Using a Pulsed Linear Accelerator and the Subsequent Deep-Tissue Imaging of Molecular Oxygen Sensors in a Human Body Phantom
In 2012, a research group at Dartmouth College and Dartmouth-Hitchcock Medical Center led by Dr. Brian Pogue published results from their investigation into fluorescence and absorption spectroscopy methods using pulsed LINAC-induced CES2,5 under ambient room lighting conditions. This application note provides an overview of both that work as well as more recent experiments in which Dr. Pogue and his associates utilized Cherenkov radiation to perform high-resolution luminescence imaging of molecular oxygen sensors located at tissue depthsup to 3 cm.

Tech Notes

IntelliCal-Automated wavelength and intensity calibration routines significantly improve accuracy of recorded spectra
Automated wavelength and intensity calibration routines significantly improve accuracy of recorded spectra.

Fully automated wavelength calibration method optimizes data accuracy
Patent-pending IntelliCal® calibration technology from Princeton Instruments enables fast, reliable wavelength calibration with minimal user input.

Instrument Automation via National Instruments LabVIEW
03/04/2020  Teledyne Princeton Instruments provides robust documentation and building blocks to help most users perform their desired automation without any extra effort needed.



IsoPlane Imaging Spectrographs

IsoPlane Imaging Spectrographs

Award-winning imaging spectrographs with superior performance over Czerny-Turner traditional designs, available with 203 mm and 320 mm focal length designs.

LightField Scientific Imaging & Spectroscopy Software

LightField Scientific Imaging & Spectroscopy Software

Ground breaking software to control your Princeton Instruments systems. Now with Windows 10 support. It's like nothing you have ever experienced!

SpectraPro 2150 Spectrometers

SpectraPro 2150 Spectrometers

High value, dependable industry standard series of spectrographs and monochromators for a variety of applications.

PyLoN Cameras for Imaging & Spectroscopy

PyLoN Cameras for Imaging & Spectroscopy

PyLoN high-resolution front-illuminated, back-illuminated, & back-illuminated deep-depletion imaging & spectroscopy CCDs.

PyLoN-IR Linear InGaAs Cameras

PyLoN-IR Linear InGaAs Cameras

This InGaAs detector offers 16-bit digitization and leads the industry with the fastest spectral rate and lowest system read noise.

Light Sources

Light Sources

Princeton Instruments offeres a variety of light sources for use with their spectrometers.

Fiber Bundles and Adapters

Fiber Bundles and Adapters

Several different fiber optic bundles are designed specifically for use with Princeton Instruments monochromators and spectrographs.

Filter Assemblies

Filter Assemblies

Our filter wheel assemblies are designed to hold up to six (6) 1.0” (25.4mm) diameter samples or filters.

Single Channel Detectors

Single Channel Detectors

A wide variety of single channel detectors for use with IsoPlane, SpectraPro and TriVista systems.

Grating and Turret Accessories

Grating and Turret Accessories

There are significant advantages of multi-grating turrets in spectrometers.



Princeton Instruments monochromators and spectrographs use diffraction gratings as the optical element which separates (disperses) polychromatic “white” light into individual wavelengths (colors).

IntelliCal Spectral Calibration System

IntelliCal Spectral Calibration System

Fully automated, spectral calibration system - for up to 10x more wavelength accuracy and instrument independent results

Princeton Instruments