高分辨率宽范围波长计

高分辨率宽范围波长计

High-Resolution Wide-Range Wavelength Meter Model SHR

The SHR is an ideal low-cost high-precision spectrometer for measuring laser wavelength in a large field of laser applications, as well as in the process of alignment and testing of solid-state lasers, diode lasers, dye lasers and OPOs.

The SHR optical scheme is based on an Echelle diffraction grating operating in high spectrum orders and a linear image sensor used as a detector. The SHR does not contain any moving elements; powering and control are performed from a computer via the Full-Speed USB interface. The SHR can be triggered from your laser source via standard TTL-level signals.

Laser beam is steered to the SHR entrance slit either via a multimode optical fiber fitted with a diffuse attenuator (both are included in the delivery set) or directly, without any fibers.

The SHR allows quick and easy measuring of absolute wavelength value of both CW and pulsed lasers with outstanding precision of ± 3 pm within a widest spectral range of 190-1100 nm, as well as detecting FWHM of the analysed line.

Apart from wavelength measuring the SHR provides demonstration of analysed spectra with resolution of 30000 (λ/Δλ< div>

In respect of wavelength resolution and accuracy the SHR is an alternative to a long-focus monochromator (focal length of more than 1000mm), equipped with an appropriate CCD. But unlike the monochromator, the SHR has no moving parts and provides real-time measurements without scanning of diffraction grating. The SHR is rigid, stable and accurate, ensures absolute reliability and has more reasonable price.

The SHR wavelength meter is not directly intended for analysis of plasma emission and other populated spectra (refer to the SPECIFICATIONS, line “Source linewidth requirement”). However, the SHR can be applied in analysis of narrow spectral intervals within the spectral width of the Echelle order – from 0.5 nm in the UV spectrum range (190 nm) to 18nm in the IR (1200 nm), preliminarily separated with a filter or a monochromator. The High-Aperture Short-Focus monochromator ML44 can be used for this purpose.

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