up to 3nm@25um slit width

256pixels or 512 pixels (model number with the end of  'p')

Detector

G11508-SA, 900-1700nm, the maximum cooling is lower than ambient temperature of 40°C.

G11477-WB, 900-2200nm, the maximum cooling is lower than ambient temperature of 50°C.

G11478-WB, 900-2500nm, the maximum cooling is lower than ambient temperature of 50°C.

Cooling

TEC cooling up to -30°C

10,000:1

Integration Time

5us - 120s

Contact us for customization

· Larger aperture: F/2

· High luminous flux and sensitivity

· InGaAs detection with a cooling system

· Pixel count: 512

· Sugar detection

· Alcohol and water detection

· Plastic sorting

· Fat or lubricant detection

       For classic C-T optical path-based micro spectrometers, resolution and sensitivity are often significant trade-offs.

      The Goptica's HiNA N high-flux near-infrared spectrometer utilizes a high numerical aperture optical path design. This design ensures high resolution while also fully coupling light from 0.22NA fiber and being compatible with larger numerical aperture special fibers or spatially coupled light paths, significantly increasing light output.

· Reflective C-T path

· Offers a flexible selection of gratings and detection ranges

· Refrigerated InGaAs detector

· Compact and stable design utilizing optical and electrical separation

· Material analysis

· Near-infrared Raman detection

· Online moisture detection

· Various high-precision near-infrared reflectance and projection measurements

This figure shows an example of peak position drift caused by temperature drift of the spectrometer at different temperatures. The spectral peak is not symmetrical because the number of pixels that make up the spectral peak is very small, and under the influence of temperature drift, the highest pixel of the spectral peak moves one pixel from left to right.

At this point, we have two methods to evaluate the drift of this peak position.

1. Check the position of the highest pixel point. Obviously, the peak position has shifted by one pixel, which means approximately 0.15 nm.

2. Fit the peak values before and after drift, and find the fitted peak point between two pixels. The drift of the fitted peak point is about 0.07nm

So which of these two methods is correct? We believe the second one is correct, reflecting the true drift of the peak position. The reasons are as follows.

1.High resolution results in a low pixel sampling rate for spectral peaks, and directly observing the shape of a pixel does not reflect the actual shape of the peak.

2.The spectral peak is physically closer to a symmetrical distribution, and the shift in peak position will not cause a change in peak shape.

3.By fitting all the pixels that make up the spectral peak, the peak shape obtained is closer to the physical reality of the peak.

Therefore, using fitted peak shapes to determine peak positions and evaluate spectrometer drift is the correct method.

Is it necessary to do so in practice? It depends on the actual situation. If

1.Low spectral resolution and high sampling rate of spectral peaks require more pixels to form a peak, and these pixels themselves are connected in a smoother and more symmetrical peak shape. Then, the position of the highest pixel or between two pixels can be directly found, and the peak position can be confirmed through visual evaluation.

2.With high spectral resolution and the need to accurately know peak values, the above fitting method is required. Fitting can be achieved through spline algorithm or Gaussian or Lorentz fitting, and one can choose based on the spectral properties of the tested sample. If you don't know how to choose, please use spline curves.

Forked optical fiber,

 Y-shaped fiber: 2 fibers

Halogen light source

Wavelength 360 - 2500 nm

Long service life, usually 10000 hours

SMA905 interface

Wavelength 190 - 400 nm

Long service life, usually 1500 hours

SMA905 interface

Fiber optic attenuator

Wavelength 200 - 2500 nm

Adjustable slit for attenuation

Wavelength 185 - 2500 nm

Numerical aperture 0.22 - 0.37 NA,