Wide wavelength coverage
Measures across approximately 350-1260nm without recalibration.
Description
A compact wavelength measurement device based on Fizeau interferometers, providing reliably accurate measurements over a wide range of wavelengths (350-1120nm) without recalibration, and up to 1350nm on request. The measurement and calculation is performed on the device, with the result displayed on the screen, removing the need for a host computer. Turn it on, and know your wavelength in less than 2 seconds.
The small form factor makes it an easy-to-use analysis tool, and can be powered either through USB or from a DC plugpack or external battery. An analogue output can be used for wavelength monitoring or laser stabilisation via a built-in PID controller.
Ethernet and USB interfaces allow immediate integration into existing control systems (LabVIEW, MATLAB and python drivers provided) using simple text-based commands. A fully-featured software suite is provided, including long-term measurement and modehop-free scan-range measurement. A simple one-button recalibration procedure using an external reference source compensates for any long-term drift. External triggering and wide bandwidth mode allow use with pulsed lasers.
Two, four, and eight-channel fibre switchers
Compact two, four, and eight-channel fibre switchers are available, using MEMS technology for essentially infinite lifetime and rapid switching. Software controlled (including autostep functionality) or front-panel push button switching. Each channel has its own 16-bit DAC for laser frequency control.
Contact us to discuss OEM integration opportunities.
High absolute accuracy
Typical accuracy better than ±200MHz, with 600MHz (3σ) specified performance.
High-speed measurement
Up to hundreds of measurements per second for real-time monitoring.
Built-in stabilisation capability
Integrated PID output enables direct laser frequency stabilisation.
Standalone operation
On-device display allows full operation without a computer.
Flexible system integration
USB and Ethernet interfaces with Python, MATLAB, and LabVIEW support.
Features
- Operates over 350 - 1350nm without recalibration
- 3-sigma uncertainty of 600MHz; typical measurement accuracy < 200MHz
- Built-in PID for laser frequency stabilisation
- Runs from USB or 5V DC jack, no computer required!
- Simple computer interface over Ethernet/USB
- 2x, 4x and 8x fibre switchers available
System Integration
The FZW can operate as a standalone measurement device or integrate directly into laser control loops via its analogue PID output. It is widely used in feedback-stabilised laser systems and multi-laser experimental setups.