We believe you should have full control and maximum flexibility when configuring your VIS-NIR spectrometer. That’s why we offer so many build-to-print options for range, 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 25 and 50 μm slits for our VIS-NIR spectrometer, 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/2.0 design delivers superior signal and ultra low background when used with matched NA fibers (0.22-24). Simplifies sample alignment in the lab or field.
Free-space coupling to spectrometer
This 0.24 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 ambient and TEC-regulated detectors for the WP VIS-NIR spectrometer, allowing you to balance your required signal to noise ratio (SNR) and temperature stability with cost for the best possible value.
An uncooled detector is often adequate for many basic spectroscopy applications, but for uncontrolled environments, a thermoelectrically regulated (TEC-regulated) detector offers better noise floor stability. Contact us to discuss the right choice for your application.
|Detector temperature||Room temp (≈ 25°C)||10°C|
|Benefits||Most cost effective option for quick measurements||Fixed dark noise (better spectral reproducibility)|
|Signal to noise||Good SNR high throughput detector||Improved SNR compared to ambient detector|
|Applications||Best for teaching and lab environments||Great for variable environments & handheld use|