OtO Photonics' Megrez (MG-series) spectrometers are high resolution models featuring thermoelectrically cooled linear sensors in a highly configurable Transmissive-Reflective-Transmissive (T-R-T) Czerny-Turner structure.
Standard Megrez models are available with operating ranges of 625-818nm (V32) and 790-960nm (NIRT7), both using a 1000 grooves/mm grating blazed at 900nm. However, the T-R-T optical cavity design of Megrez allows for design variation with options for customisation of grating, slit and spectral range within 180nm to 1100nm.
The first Megrez model to be released (MG1060S) features a 2048-pixel TE-cooled back-thinned CCD sensor. All Megrez models use 32-bit RISC controllers .
OtO have developed a compact and rigid optical bench for Megrez, providing the ideal platform for high resolution measurements with excellent thermal and humidity cycling stability and minimum variation of resolution and wavelength shift due to shock and vibration.
| Description | MGD1060S | |
| Sensor | 2048-pixel back-thinned CCD | |
| Grating | 1000g/mm @ 900nm 1200g/mm @ 500/600/750/850nm 1500g/mm @ 600nm 2400g/mm @ 300nm |
|
| Slit Width | 5µm, 10µm or 25µm | |
| Resolution (FWHM) |
< 0.35nm FWHM Depends on Grating, Slit Width, Wavelength Range (see table) |
|
| Integration Time |
5ms - 24s | |
| Dark Noise | 16 | |
| Dynamic Range |
500 | |
| SNR | 5000 | |
| Optical Parameters |
f/#: 5.0 NA: 0.1 Focal Length (R1-R2): 85-101.5mm |
|
| Dimensions | 199 (L) x 170 (W) (+5.25mm for SMA) x 64.5 (H) mm | |
| Model | Spectral Range | Grating | Resolution (FWHM) @ Slit Width | ||
| 5µm | 10µm | 25µm | |||
| VT1 | 380 - 445nm | 2400g/mm @ 300nm | ~ | 0.10nm | 0.15nm |
| V26 | 535 - 565nm | 2400g/mm @ 300nm | ~ | 0.10nm | 0.12nm |
| V25 | 535 - 650nm | 1500g/mm @ 600nm | ~ | 0.17nm | 0.25nm |
| NIRT5 | 802 - 878nm | 1500g/mm @ 600nm | 0.10nm | 0.17nm | 0.25nm |
| 535 - 685nm | 1200g/mm @ 500nm | ~ | 0.20nm | 0.30nm | |
| 535 - 685nm | 1200g/mm @ 600nm | ~ | 0.20nm | 0.30nm | |
| 535 - 685nm | 1200g/mm @ 750nm | ~ | 0.20nm | 0.30nm | |
| V36 | 535 - 685nm | 1200g/mm @ 850nm | ~ | 0.20nm | 0.30nm |
| V32 | 625 - 818nm | 1000g/mm @ 900nm | ~ | 0.24nm | 0.35nm |
| NIRT7 | 790 - 960nm | 1000g/mm @ 900nm | ~ | 0.24nm | 0.35nm |
Communication with MG-Series spectrometers is via high speed USB2.0 (480Mbps) and 8-pin GPIO interfaces. The inclusion of OtO's SpectraSmart software ensures that Megrez series spectrometers can be up-and-running within minutes whilst the availability of a Software Development Kit for Windows and example code for Linux and other operating systems facilitates integration into a broad range of demanding high resolution and high speed applications.
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Megrez product brief |
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Megrez data sheet |
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