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WP 248 Raman Spectrometer

Eliminate fluorescence with this compact, high sensitivity 248 Raman spectrometer for research. Designed for use with a 248.6 nm compact NeCu laser in a free-space configuration, it also enables cost-effective application of UV resonance Raman.

  • Ideal for fluorescence-free research & UV resonance Raman
  • 400 – 3200 cm-1 measurement range enabled by our custom longpass filter
  • Captures clean spectra in seconds (see example spectra below)
  • Collects a collimated FOV using integrated lens (user-changeable free space input available)
  • High NA, f/2.0 design based on our own VPH grating for superior sensitivity
  • Choice of uncooled or TEC-regulated detector to suit application needs
  • Triggering accessory included to synch acquisition with laser
  • Complimentary ENLIGHTEN™ operating software & SDKs
Download full specifications

Technical Notes


We’ve maximized the efficiency of our 248 Raman spectrometer to give you more sensitivity, better SNR, and faster measurements in a compact footprint. Collect more light with our f/2.0 input, keep more light with our patented high transmission VPH gratings & diffraction-limited optics, and detect more light with scientific-grade detectors. When tested side by side, our spectrometers consistently outperform larger, more expensive units. From sample coupling to detector cooling, we give you more options to get the exact performance you need, powered by our free ENLIGHTEN™ spectroscopy software.

We believe you should have full control and maximum flexibility when configuring your 248 Raman spectrometer. That’s why we offer several build-to-print options for resolution, detector cooling, and sample coupling – backing each with our advice and experience. Learn more about each below, or contact us to discuss the best options for your application.

SLIT WIDTH: Defining Resolution

Sensitivity and resolution are competing factors when choosing slit size. A larger slit allows more light to enter the spectrometer, increasing sensitivity for low-light applications such as fluorescence. Resolution improves, however, as slit width is reduced (though not always linearly). We offer a 25 μm slit as standard for the WP 248 for the best balance between sensitivity and resolution for most applications. Please contact us if you feel a different slit size would be best suited to your research.

SAMPLE COUPLING: Integrated lens or free-space?

How you interface with your Raman sample depends on your preferred sampling optics. The standard configuration for the WP 248 Raman spectrometer features an integrated lens designed to efficiently couple collimated light into the f/2.0 spectrometer input. We also offer a free-space input to collect light from an f/2.0 field-of-view (FOV) upon request. The two coupling options are user-exchangeable in the field.


The WP 248 Raman spectrometer may be configured with your choice of sample coupling (integrated lens or free space). Our standard option is an integrated lens designed to efficiently couple collimated light into the f/2.0 spectrometer input. We also offer a free-space input, which is user-exchangeable in the field. The spectrometer is designed for use with a Photon Systems 248.6 nm NeCu laser, and includes a compatible triggering accessory. Need help designing your free-space sampling optics? Contact us to discuss.

  • f/#: 2.0
  • Wavenumber Range: 400 - 3200 cm-1 (all models)
  • Blocking/Sorting Filter: Installed with custom 400 cm-1 longpass filter as standard
  • Resolution, 25 um slit: 14 cm-1
  • Blocking/Sorting Filter: Installed with custom 400 cm-1 longpass filter as standard
  • Fiber Port: Integrated lens (free space available upon request & user-exchangeable in field)
  • Size: 30.2 x 17.9 x 7.5 cm, 3.0 kg

We offer two cooled detector options for the WP 248 Raman spectrometer, allowing you to balance your desired signal to noise and temperature stability with power draw and cost for maximum value. Not sure what’s right for you? Contact us to discuss.

-A detector: Operates at ambient temperature,  typically 25°C (uncooled); suitable for many applications
-R detector: TEC-regulated to 10°C; most cost-effective Raman solution

Learn more about our detector cooling options.

  • Detector Type and Model: Hamamatsu S10420-1006 CCD (A) | S11850-1006 CCD (R)
  • Active Pixels: 1024 (all models)
  • Pixel Dimensions: 14 x 14 μm
  • Integration Period Range: 3 ms - 60 s
  • Optional Regulated Detector: 10°C (R)
  • Regulated Detector Temperature Stability: ± 0.2°C (R)
  • System Operating Temperature Range: 0°C to 40°C, non-condensing
  • Data Interface: USB 2.0 Type B receptacle
  • Power Consumption: <500 mA @ 12 V

Engineering Documents

  • ENG-0001 > Spectrometer USB Interface Specification
  • ENG-0034 > Feature Identification Device (FID) EEPROM Specification
  • ENG-0123 > UV Raman Spectrometer Trigger Cable Pin Out

Brochures & Product Sheets

Tech Notes