Compact Wavemeter (MWM)
The MOGLabs Laser Wavemeter is a precision compact laser wavelength measurement device, and optical spectrum analyser, with on-unit display and ethernet/USB connectivity standard. Use it standalone or with the included Windows GUI software package.
Unlike interferometric wavemeters, our device clearly reveals multimode laser operation, making it particularly suitable for use with external cavity diode lasers and atom cooling and trapping experiments.
At prices so low you can afford to put a wavemeter on every laser in your lab, to know when your laser is unlocked or multimoding.
Features
- - Picometre (<GHz) accuracy
- - Picowatt sensitivity
- - Any wavelength from 350nm to 1620nm⁺
- - Instantly identifies multimode input
- - Fast: up to 1250 measurements per second
- - CW or pulsed laser input
- - Built-in PID feedback with analogue output
- - Ethernet and USB standard
Applications
- - Laser frequency diagnosis and testing
- - Identifying laser multimode behaviour
- - Determining absorption lines
- - Gas spectrometry
- - Raman fluorescence
Specifications
Wavelength/Frequency
| Wavelength range | 350nm – 1620nm Supplied calibrated at one wavelength e.g. 780 ± 12 nm |
| Input power requirement | <1 pW (1 picowatt); max 30 nW |
| Precision | 100MHz (0.1pm) at 780nm |
| Accuracy | ±1 GHz / ±0.001nm at 780nm, at time of calibration |
| Optical resolution | < 0.02 nm (σ std dev, wavelength dependent) |
| Dynamic range | > 35 dB (>50dB with HDR) |
Electronics
| Display | Built-in LCD and host computer |
| Interface | Windows GUI |
| PID feedback | 12-bit DAC output, 0.5mV resolution, 10 Hz bandwidth |
| Readout | Typically 20 per second, up to 100 /s, host dependent |
Interface
| Ethernet | 10/100 TP RJ45 |
| USB | USB2.0, plug type USB-B (350mA with display on) |
| SMA | Analogue output, ±2.5 V, for PID feedback control |
| Power consumption | 5W |
Inputs/Outputs
| Optical input | FC single mode fibre |
| DAC | 12-bit output, ±2.5 V, 0.5mV resolution |
Dimensions
| Dimensions (approx.) | 165mm x 85mm x 70mm (LxWxH) |
⁺Note: the MWM operates over a small wavelength range, e.g. 780 ± 12 nm. Operation in a different wavelength range requires mechanical adjustment and recalibration.
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