Real-time wavelength measurement system
Wavemon™
- Sub-nanometre resolution and accuracy
- Five adjustable transimpedance gain ranges and 24-bit ADC
- Data output via USB (Windows/OSX/Linux support)
- ASCII command set for simple control
The Wavemon™ system represents a significant advancement in real-time wavelength measurements. Using a multi-channel photodiode system, the unit provides amplitude feedback without the use of an expensive array spectrometer or sensitive optical alignment.
Applications
- Monochromator wavelength monitoring
- Real-time production testing for wavelength and amplitude
- 940nm VCSEL testing for facial recognition
- LED device or wafer level test and characterisation
- Production line or laboratory use
Three photodiodes, each with an independent transimpedance amplifier circuit and 5 gain ranges for each channel, along with proprietary optical filtering techniques allows for wavelength accuracy of +/-0.25 nm and repeatability of +/-0.01 nm. Rock-solid stability and a reduced noise floor is achieved via a temperature stabilised feedback loop incorporating PID feedback.
Specifications
|
| Silicon photodetectors |
One bare plus two optically filtered |
| Spectral range |
365 nm to 1.1 µm (SWIR option) |
| Wavelength absolute accuracy |
± 0.25 nm |
| Wavelength repeatability |
± 0.01 nm |
| Irradiance absolute accuracy |
± 1% |
| Irradiance repeatability / stability |
± 0.01 nm |
| Capture time |
100 ms (typical) |
| Unit dimensions (mm) |
90 x 160 x 63 (WHD) |
Gamma Scientific website
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