HighFinesse WS Series

Standard wavelength meter
The HighFinesse/Ångstrom wavelength meters are the gold standard for measuring the wavelength of both pulsed and continuous wave laser sources. Designed for cutting-edge research, quantum technologies, and industrial applications, they deliver exceptional absolute and relative accuracy and unmatched measurement resolution.
Using a unique, non-moving Fizeau interferometer technology, our instruments—especially the WS8 Series—achieve superb accuracy. Standard models connect via USB to an external PC.
Housed in a compact, thermally insulated enclosure, the optical components and electronics are protected from environmental influences. Temperature and pressure compensation ensure long-term stability. It’s modern design allows for the integration of additional options tailored to specific applications.
With an absolute accuracy of 2 MHz and a measurement resolution of 100 kHz, the new WS8-2 is the ultimate solution for frequency monitoring and stabilization. Combined with HighFinesse’s exclusive photonic crystal switch technology, it enables quasi-simultaneous measurement of up to 8 channels across a broad wavelength range.
Despite its high measurement resolution, the WS8-2 remains a compact, reliable, and versatile tool, ideal for a wide range of applications, including quantum physics laboratories, quantum computing, spectroscopy, astronomy, meterology, advanced industrial and research environments.
In short, the versatility of our instruments mirrors the endless possibilities of laser-based research and technology — today and tomorrow.

Your Benefits

Unrivaled accuracy
With an absolute accuracy of 2MHz our WS8-2 Wavemeter is the indispensable tool for cutting-edge research.
Superb measurement resolution
The superb measurement resolution lets you detect the smallest changes of your laser while enabling perfect control.
Reliable and robust
Due to its non-moving parts technology and modern design, the WLM is a durable, reliable, and versatile instrument not only for laboratory set-ups but also suitable for harsh environmental settings.
Broad wavelength range

We cover wavelength ranges from 192 to 2250 nm, and even to 2600 nm with the WF Series. Combined with the multichannel switch, the wavelength meter allows measurements of up to 8 different lasers/ wavelengths quasi simultaneously.

Measurement speed
Follow fast wavelength dynamics of your laser with a measurement speed up to 2.5 kHz.

Applications

Quantum physics science
Atom quantum computing & simulation
Ion quantum computing & simulation
Optical quantum clocks
Quantum communication
Atmospheric research

Options

Spectrometer
The spectrometer option allows the analysis of laser spectra to an accuracy of 6 GHz. With this option also multi mode lasers and lasers broarder than 30% FSR can be studied. The software automatically searches the spectral section where the laser emission line is located and displays it on the screen. In combination with the additional Fizeau interferometer array this allows wide range applications with a single instrument.
Calibration Source
HighFinesse Stabilized Laser References incorporate absorption spectroscopy systems, which yield extremely accurate frequency stabilizations, ideal for calibration of our wavelength meters in the visible and infrared wavelength regimes.
Multichannel Laser Control
The MCLC option combines the capabilities of the photonic crystal switch and PID option in one instrument. It can be ordered with 4 or 8 channels.
L (Linewidth)
The linewidth estimation of a single mode laser source is performed by a special algorithm which eliminates the interferometer’s instrument response function. The algorithm enables the estimation of the linewidth with an accuracy better than the tenth of the instrumentʼs FSR. If you are interested in linewidth and noise characterization of narrow linewidth lasers below 100 MHz you might be interested in our linewidth analyzers (LWA).
ET (External Trigger)
The External Trigger (ET) option guarantees synchronization between pulsed excitation and measurement. It provides low-noise signals without parasitic parts when measuring pulsed signals with low duty cycles.
MC Multichannel Switch
Combining our wavelength meters with one of the fastest fiber switches enables quasi-simultaneous measurement of up to eight laser wavelengths. Exposure time and other parameters can be set individually for each light source.
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