We believe you should have full control and maximum flexibility when configuring your NIR spectrometer. That’s why we offer so many build-to-print options for range, resolution, 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 25 and 50 μm slits for our NIR spectrometer series, and can advise on the best choice for your application. Due to the high sensitivity of our low f/# spectrometer designs, it is often possible to use a smaller slit width than would be required with a typical f/4 spectrometer, allowing you to achieve higher resolution.
SAMPLE COUPLING: Fiber or free-space?
How you interface with your sample depends not only on whether you value convenience or configurability, but also on the data quality you require. See below for some quick tips.
Fiber coupling to spectrometer
Our f/1.3 design delivers superior signal and ultra low background when used with matched NA fibers (0.36-0.39). Simplifies sample alignment in the lab or field.
Free-space coupling to spectrometer
This 0.36 NA input offers superior signal & freedom in the design of your own sampling optics, from spot size to working distance. Ideal for research & OEMs.
DETECTOR COOLING: Controlling noise
We offer only TEC-cooled detectors for our NIR spectrometer, ensuring best signal to noise ratio (SNR) and temperature stability in this thermally-sensitive detection regime.
TEC COOLED (-C) |
|
| Detector temperature | -15°C |
| Benefits | Lowest dark noise option – highly consistent |
| Signal to noise | Best SNR for lowest limits of detection |
| Applications | Ideal for long integration time measurements |
