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-500, 500mm 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 0.10 nm 2.38 nm/mm
HRS-500 datasheet pdf 500 mm f/6.5 0.05 nm 0.07 nm 1.52 nm/mm

NOTE: SpectraPro HRS is currently available only in 300 mm and 500 mm focal lengths. Please visit the SpectraPro page for 150 and 750 mm focal length models.

* with 1200 g/mm grating @ 435.8 nm and 10 micron slit width and 4 mm slit height | ** with 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.


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.
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.
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 Spectrometers

SpectraPro Spectrometers

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

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.

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