The SHR-IR spectrometer is an ideal instrument for measuring absolute wavelength value of pulse and CW lasers and diodes in the spectral range from 600nm to 1800nm with accuracy better than ± 15pm, as well as detecting FWHM of the analyzed line.
Apart from wavelength measuring the SHR-IR provides demonstration of analysed spectra with resolution of 4 000 (λ/Δλ, FWHM) which constitutes from 0.15nm for 600nm to 0.5nm for 1800nm. The SHR-IR also ensures on-line monitoring of the above values in the process of tuning the analysed wavelength.
The instrument does not contain any moving elements; powering and control are performed from a computer via the Full-Speed USB interface. Analysed light is steered to the entrance slit either via a multimode optical fiber with a diffuse attenuator (included in the delivery set) or directly, without any fibers.
In respect of resolution and wavelength measuring precision the SHR-NIR is an alternative to a monochromator-spectrograph with focal length not less than 500mm, equipped with an appropriate IR-detector.
But unlike the monochromator, the SHR-NIR has no moving elements and provides real-time measurements without scanning. The SHR-IR is rigid, stable and accurate, ensures absolute reliability and has more reasonable price.
The SHR-NIR spectrometer is indispensable in the process of adjustment, alignment and testing of laser systems operating in the near IR spectrum range.
| Option | Value |
| Operation mode | CW and pulsed light (externally triggered) |
| Spectral range, nm | 600-1800 |
| Accuracy of wavelength detection, nm | ± 0.015 |
| Resolution (l/DlFWHM) | 4 000 (ΔλFWHM from 0.15nm for 600nm to 0.48nm for 1800nm) |
| Source linewidth requirements, not more than | ≤125 cm-1 (from 4nm for 600nm to 40nm for 1800nm) |
| Optical interface |
|
| Computer interface | Full Speed USB interface |
| Requirements to external trigger pulse (for pulsed lasers) | |
| — polarity | Positive |
| — amplitude, V | 3-15 |
| — pulse duration FWHM, μs | 5-20 |
| — rise time, μs | ~10 |
| — connector | BNC-58 |
| Software | WLMeter |
| Dimensions, mm | 142 x 110 x 80 |
| Weight, kg | 1.2 |
Optical parametric oscillator (OPO). Idler wave. Real-time measurements at tuning laser wavelength.
1725-1750nm laser diode spectrum acquired with the SHR-IR.
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