Raman spectrometers
for system integration
Choosing the right Raman spectrometer for your application
A Raman instrument consists of a laser, a probe, and a spectrometer, and, depending on your application, there are many things to consider when choosing equipment. For spectrometers used for Raman spectroscopy, sensitivity and resolution are often the most important parameters, and Ibsen Photonics’ highly sensitive spectrometers for Raman spectroscopy offer world-leading sensitivity and impressive resolution in a compact form factor.
Whether our offerings are right for you depends on your application’s requirements for technical parameters such as laser wavelength, spectral range, sensitivity, and resolution. The choice of laser wavelength is often determined by finding the right compromise between the Raman scattering signal and the fluorescence signal from your sample, and in many cases, a laser wavelength of 785 nm is a good starting point.
The spectral range is determined by the specific samples you are going to analyze. Most commonly, only the Stokes shift is measured, meaning that the wavenumber shifts are positive and the wavelength range is longer than the laser wavelength.

Raman spectrometer sensitivity and resolution
In general, Raman signals are very weak and, the spectrometer used in Ramas systems therefore needs to be highly sensitive. This can be achieved by choosing a spectrometer with as high throughput as possible. Ibsen Photonics offers industry leading sensitivity through our in-house manufactured transmission gratings with the highest diffraction efficiency and widest bandwidth on the market. Furthermore, a high numerical aperture, a tall entrance slit and the use of a deeply cooled detector can provide high sensitivity.
The resolution of a spectrometer determines how well your instrument will be able to resolve closely spaced peaks. High resolution often means lower sensitivity, so it is generally advisable to choose a resolution just slightly larger than the wavenumber separation between the two closest spaced peaks in your anticipated spectra.

Handheld or benchtop?
Besides the technical requirements, you should also consider how the instrument is going to be used. If the instrument is a handheld unit, it is important to consider size, weight, and possibly power consumption for prolonged battery operation. In that case, cooling should generally be avoided as it increases both weight and power consumption. If the instrument is a tabletop unit, the constraints on size, weight, and power consumption are not as stringent.
Raman spectrometer cost
Finally, the Raman spectrometer cost is naturally an important factor. Factors that drive the Raman spectrometer price upwards include cooled detectors and high numerical aperture optics. As a general rule of thumb, the smaller the spectrometer, the lower the Raman spectrometer cost.
Our Raman spectrometers
Parameter | Unit | EAGLE Raman HR 532 | EAGLE Raman HR 785 | EAGLE Raman-S |
---|---|---|---|---|
Wavelength range | nm | 532 - 732 | 785 - 1080 | 800 - 1100 |
Wavenumber shift range | cm-1 | 0 - 51361) | 0 - 34802) | 200 - 36502) |
Resolution | cm-1 | 8.53) | 5.83) | 6.34) |
Numerical aperture | 0.2 | 0.2 | 0.3 | |
Optical input options | SMA | SMA | Free space, SMA or custom ferrule | |
Multi-channel capability | No | No | Yes | |
Detector options | Hamamatsu S11850-1106 or S14651-2048 | Hamamatsu S11850-1106 or S14651-2048 | Andor iVac 316 | |
Detector cooling | o C | +5 | +5 | -60 |
Electrical interface | SPI or USB | SPI or USB | USB | |
Dimensions | mm x mm x mm | 125 x 139 x 60 | 125 x 139 x 60 | 128 x 152 x 248 |
1) With 532 nm laser wavelength
2) With 785 nm laser wavelength
3) Maximum resolution with 20 x 1000 μm slit
4) Typical resolution with 20 x 3000 μm slit
Ibsen as your Raman spectrometer manufacturer
At Ibsen, we understand that volume manufacturing of application-specific Raman spectrometers is a completely different task than building a single scientific instrument. We are an ISO 9001 and 13485 certified manufacturer with decades of experience in volume manufacturing of OEM spectrometers.
Our emphasis is on the high and consistent quality of our products, ensured through our proven, robust designs and 100% outgoing inspection. Especially for Raman spectrometers, our low unit-to-unit variation can help you achieve model transferability between your instruments.
Our spectrometer designs have undergone environmental qualification to ensure proper operation within specified thermal, humidity, vibrational, and drop test conditions.
We have established long-term relationships with a range of qualified sub-suppliers, ensuring you a stable supply chain. Furthermore, we offer our OEM customers flexible supply options, typically based on frame order contracts or Kanban agreements.
All in all, Ibsen Photonics is a well-established spectrometer supplier that enables you to focus on your core business.
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