Raman Spectrometer and System Family from Wasatch Photonics

At Wasatch Photonics, people know the difference that low noise, high sensitivity, and the potential to capture spectra rapidly can make to an OEM product design or a research project.

The f/1.3 spectrometers from Wasatch Photonics have been particularly designed for Raman spectrometers by using the company’s own patented high efficiency VPH gratings, and combined with a high NA optical design to offer 10 times the SNR and sensitivity of a normal compact spectrometer.

Modular Spectrometer
Integrated System
Integrated System
WP 248 Organic Fluorescence-free
spectra, UV
resonance Raman
WP 405 Inorganic Strong signal,
high resolution
WP 532 Inorganic Strong signal,
high resolution
WP 532 ER Inorganic Strong signal,
spectral range
(~4000 cm-1)
WP 633 WP 633L Organic Best general
choice for SERS
WP 785 WP 785 +
int. laser
WP 785L WP 785 OEM Organic Balances signal
with fluorescence
WP 785 ER WP 785 ER +
int. laser
Organic Strong signal,
extended spectral range
(~3500 cm-1)
WP 830 WP 830 +
int. laser
WP 830L WP 830 OEM Organic Most popular OEM
excitation wavelength
WP 1064 WP 1064L WP 1064 OEM Organic Surprisingly short
acquisition times


What System Type is Best for Different Applications—Modular, Semi-Integrated, or Fully Integrated?

The option between a fully integrated, compact Raman system and a flexible, probe-based one depends mostly on which optical coupling technique is perfect for users’ sample or application. Size, sensitivity, and laser control may also be taken into consideration.

A modular Raman system utilizes fibers to route excitation light between spectrometer, probe, and laser. The physically flexible interface is excellent for bringing the Raman system to the sample (in-situ process monitoring, art analysis, and clinical use) or when the spectrometer is unable to reach very close to the sample (extreme surroundings or production line). In addition, it provides the highest reconfigurability to mix and match the preferred components, to re-use existing equipment, or to change sampling accessory.

A semi-integrated Raman system incorporates the laser and spectrometer into a single unit to decrease both the cost and footprint, while individual connectors for each unit enable the use of a fiber-optic Raman probe or other sampling optics. Such a configuration increases the value without affecting the flexibility and produces a signal that is similar to a fully modular system. Laser power and controls are offered via the spectrometer, streamlining cabling and enabling automated or remote operation.

A fully integrated Raman system integrates the spectrometer, sampling optics, and laser into a single unit, removing fibers that introduce coupling losses and can break. Power supply and communications are also consolidated into one, compact footprint with direct laser power control via drivers or software. A fully integrated system significantly offers higher signal because of the built-in optics, whereas more flexibility is offered by a modular system.

Customers can contact Wasatch Photonics to discuss how the company’s Raman systems and Raman spectrometers can meet their specific requirements. Wasatch Photonics also develops a smaller OEM Raman spectrometer optical bench for integration into custom systems.

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