Wasatch Photonics

GRATINGS +1 435.752.4301
SPECTROMETERS +1 919.544.7785
OCT +1 919.544.7785

WP 785 ER Raman Spectrometer

  • Extended 100 – 3600 cm-1 spectrometer range
  • High NA, f/1.3 optical design for superior sensitivity and SNR
  • Interchangeable slit to adjust resolution & sensitivity (-IC)
  • Free operating software, SDKs & matching libraries
Download WP 785-ER-IC specifications

Complete Your Raman System

Upgrade your current Raman setup with this sensitive standalone extended range spectrometer, or build a new system from the ground up. Either way, you’ll have maximum configurability in choice of laser and sampling optics, and control over resolution and signal level with our user-interchangeable slit.

Make it a complete, semi-integrated Raman setup:
• Add our unique user-configurable probe or your own sampling optics
• Switch between liquid and powder samples with a multipurpose sampling chamber
• Install our free ENLIGHTEN™ software or use our SDKs to write your own code
• Receive a complimentary 1-year KnowItAll licence to perform Raman libary matching

Are you developing a product? We offer an equally sensitive but streamlined OEM design with excellent stability and reproducibility.

Optical Specifications

DETECTOR COOLING OPTIONS
TEC-Regulated (-R)TEC-Cooled (-C)
Spectral Range*100-3600 cm-1200-3350 cm-1
Resolution10 µm slit7 cm-17 cm-1
25 µm slit8 cm-19 cm-1
50 µm slit13 cm-113 cm-1
Detector TEC setpoint10 ± 0.2°C-15 ± 0.2°C
Integration time3 ms – 60 s8 ms – 60 s
Spectrometer InputSMA 905 connector (lens or FC/PC optional), f/1.3 (0.39 NA)

*Start and end wavenumber may be customized, but total range is fixed. Contact us for options.

Note: Specifications are subject to change based on available components & manufacturing data.

Detector Cooling Options

We offer two detector cooling options for the WP 785 ER  Raman spectrometer, allowing you to balance your desired signal to noise and temperature stability against power draw and cost for maximum value:

  • TEC-regulated (-R): Detector is cooled externally to 10°C
  • TEC-cooled (-C): Detector has integrated cooling to -15°C

Need advice? Contact us to discuss what’s best for your specific application.

Software & Hardware

Operating SoftwareENLIGHTENTM Raman spectroscopy software & SDKs included
Library MatchingIdentify Raman spectra via Wiley's KnowItAll Raman Identification Pro
(free 1-year trial, fully integrated into ENLIGHTENTM)
Data InterfaceUSB 2.0 Type B receptacle
Max Sampling Rate> 250 Hz
Operating Temperature0°C to 40°C, non-condensing
Dimensions24.0 x 13.5 x 7.1 cm
Weight3.0 kg

Engineering Documents

  • ENG-0001 > Spectrometer USB Interface Specification
  • ENG-0034 > Feature Identification Device (FID) EEPROM Specification
  • ENG-0126 > Raman Laser Safety Interlock Behavior
  • ENG-0134 > Interchangeable Slit Exchange & Use (coming soon)
  • ENG-0157 > Empirical Power Draw and Power Supply Guidance for OEMs

Competitive Advantage

We’ve made it our mission to design compact, portable Raman without compromise – instruments that deliver superior sensitivity at a cost-effective price point. We place one of our own perfectly matched, patented volume phase holographic (VPH) gratings at the heart of every spectrometer. With uniform response and low loss, these gratings enable a compact and highly efficient all-transmission optical design that minimizes loss and maximizes stability for consistent, high-SNR spectra.

SENSITIVEWasatch-Better-Sensitivity-Graph

Significantly higher signal than other, ‘low cost’ compact spectrometers

Learn more

RAPIDCoconut oil spectrum, 1064 nm Raman (Wasatch Photonics vs reflective f/4 spectrometer)

Take measurements in a fraction of the time, with better signal to noise

Learn more

REPRODUCIBLEStandard vs OEM product system response - 785 nm Raman

Collect consistent spectra day-to-day and unit-to-unit using simple calibrations

Learn more

STABLEWP-thermal-stability-graph

Minimal thermal drift, easily corrected; robust to shock & vibration

Learn more

Common Raman Spectral Bands

The pattern of peaks in a Raman spectrum is unique to the sample, providing a fingerprint which can be used to identify or analyze the material. The ‘fingerprint’ region up to 1500 cm-1 is often enough to confirm identity, while the extended ‘functional’ region out to 3600 cm-1 includes bands for additional, functional groups in a molecule. In addition to our standard models, we can design custom range spectrometers for OEMs. See below for common Raman spectral bands.WP-Raman-Bands-Graphic

Example Spectra









Alternate System Configurations

Need something slightly different? We offer a variety of alternate spectrometer models and system setups, and can offer expert advice on which may be the right match for your application. Consider the options below, or explore our full family of Raman products.

MORE INTEGRATED

  • Integrated spectrometer + laser, separate probe
  • Compact yet allows flexible sampling options

WP 785 ER spectrometer + laser

FINGERPRINT RANGE

WP 785 spectrometer

OEM Options

These drop-in modules form the heart of our standard products – in fact, our optical bench is our OEM bench – allowing you to perform R&D with our standard products and then migrate to the OEM equivalent for prototyping and production with no loss of performance. Learn more about our our ‘OEM by design’ philosophy.

OEM SPECTROMETER

  • Off-the-shelf spectrometer module
  • Add your own laser and sampling optics
  • Contact us for customization

WP 785 OEM spectrometer

FULLY INTEGRATED  (SML)

  • Integrated spectrometer, laser & probe
  • 100 mW singlemode laser
  • Most compact OEM footprint

Contact us about this model

FULLY INTEGRATED (MML)

  • Integrated spectrometer, laser & probe
  • 450 mW multi-mode laser
  • Field-replaceable laser design

Contact us about this model

Other Wavelength Options

248 nm Raman
405 nm Raman
532 nm Raman
633 nm Raman
785 nm Raman
830 nm Raman
1064 nm Raman

Choosing the right Raman wavelength for your application is a question of balancing sensitivity and selectivity. Although shorter wavelengths deliver the strongest Raman signal, fluorescence background can degrade signal-to-noise ratio (SNR) if the wrong wavelength is used. That’s why we offer wavelengths from 248-1064 nm, matching your specific needs and sample type to the best wavelength for the application. Explore our alternate wavelengths below. Still unsure of what you need? Contact us for a personal consultation or sample testing.

Technical Notes

  • Reproducible Raman Measurements
    Raman OEM applications need consistent spectra to deliver dependable answers. Learn how to achieve >99.5% unit-to-unit agreement using a series of simple corrections.
  • Raman: Wavelength Matters
    Learn how to choose the right excitation wavelength to achieve maximum signal and minimum noise, from 405-1064 nm, for a wide range of sample types.
  • The Wasatch Advantage
    We’ve designed a spectrometer that maximizes efficiency at every step, to allow you to collect more light, keep more light, and detect more light. We'll show you how through its design.

Applications

  • Designing Raman Solutions
    Our toolbox for Raman spectroscopy gives you the flexibility to optimize your application without compromising on performance or size. Explore the many options!
  • Rapid Plastic ID with Extended Range Raman
    Raman spectroscopy beyond the fingerprint region proves ideal for polymer identification in high throughput sorting of plastics, discriminating within families & signaling the presence of additives.
  • Extending Raman’s Reach
    Learn how a reduction in spectrometer size need not mean a compromise in performance as compared to traditional benchtop Raman systems, thus expanding the possible applications served by Raman.