SR2 Series Standard Resolution Spectrometers

Ocean Optics SR2 series spectrometers are distinguished by their rapid spectral acquisition speed and high signal SNR for high light level applications including LED/laser characterisation.

SR2 delivers best-in-class SNR for configurable spectrometers.

Each SR2 also includes OceanDirect, a powerful, cross-platform Software Developers Kit.

  • Optimised performance with high speed acquisition and great SNR
  • Automated manufacturing techniques for repeatability
  • Versatility for complex applications
  • Available in 5, 10, 25, 50, 100 or 200 µm wide slits

Wavelength range: ~220-1050 nm (configurations available within this range)
Optical resolution (w/25 μm slit): 0.43-2.0 nm (FWHM) (configuration-dependent)
Integration time: 1 μs-2 s
Dynamic range: 3400:1 (single scan)
Signal to Noise Ratio (max. per second w/High Speed Averaging Mode): 25800:1
Signal to Noise Ratio (single scan@ 10 ms): 380:1
Thermal wavelength drift: 0.02 nm/° C
Interfaces: USB Type-C; SMA; 16-pin Samtec TM; RS-232
Temperature (storage): -30 °C to 70 °C
Temperature (operation): 0 °C to 55 °C
Dimensions: 89.0 mm x 63.5 mm x 31.3 mm
Weight: 275 g



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The SR2 spectrometer is ideally suited for applications including laser characterisation, plasma monitoring, and absorbance measurements that benefit from the instrument’s high SNR performance (25800:1 maximum SNR per second w/High Speed Averaging Mode). The SR2’s combination of speed (integration times to 1 μs) and SNR provides application versatility without the trade-offs typical of comparable spectrometers.

The SR2 is highly configurable and is produced using industry leading manufacturing techniques, ensuring excellent thermal stability and low unit-to-unit variation. Preconfigured models are available with entrance slits in widths of 5 μm t o 200 μm,
providing users with a range of optical resolution (FWHM) and signal-throughput options to meet various requirements. The SR2 spectrometer is compact and remarkably versatile, and is compatible with Ocean Optics light sources, accessories and OceanView software, allowing users to optimize setups for different applications.

Each SR2 spectrometer comes with OceanDirect, a powerful, cross-platform Software Developers Kit (SDK) with an Application Programming Interface (API). With its library
of functions, OceanDirect provides users the capability to optimise spectrometer performance and access critical data for analysis.
Also, SNR can be dramatically enhanced using the High Speed Averaging Mode available in OceanDirect. Visit our website for details.

Preconfigured Models

Model:Range:Blaze wavelength:Resolution*:Grating:
SR-2UV240200-530 nm240 nm0.66 nm1200 l/mm
SR-2UVV240185-920 nm240 nm1.33 nm600 l/mm
SR-2XR250185-1100 nm250 nm1.71 nm500 l/mm
SR-2UVV300185-920 nm300 nm1.33 nm600 l/mm
SR-2UVV400185-920 nm400 nm1.33 nm600 l/mm
SR-2VIS400380-1000 nm400 nm1.34 nm600 l/mm
SR-2VN500350-1000 nm500 nm1.34 nm600 l/mm
SR-2VIS750570-850 nm750 nm0.56 nm1200 l/mm
SR-2N1000650-1100 nm1000 nm1.3 nm600 l/mm

*For 25um slit width

Specifications may be updated without notification

Download SR2 Datasheet


Related Spectrometers in the SR Standard Resolution Series

  • SR4 series for higher optical resolution requirements
  • SR6 series for higher sensitivity applications


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