Lastek: Photonics Technology Solutions

HighFinesse/Ångstrom offers sensitive and compact wavelength meters with a large spectral range for high speed measurement of lasers. The optical unit consists of temperature-controlled Fizeau-based interferometers that are read out by photodiode arrays. The high absolute accuracy is achieved by use of solid state, non-moving optics.

The optical unit and associated electronics are housed in a compact, thermal casing. The connection to a computer or notebook is realized via a highspeed USB 2.0 port, which allows a high data read-out rate. The analyzing software displays all the interferometer information and is compatible with Microsoft Windows.

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HighFinesse offer a range of calibration sources to ensure the highest accuracy and stability of measurements with their Wavelength Meters, and for use in other applications. Integrated calibration sources with absolute accuracy of up to 60 MHz, provide autocalibration for standard HighFinesse Wavelength Meters. In addition, HighFinesse offers a variety of frequency stabilized, narrow linewidth laser sources for different applications down to ± 2 MHz absolute accuracy. They are ideally for quick and accurate calibration of the Ultimate-series of HighFinesse Wavelength Meters. These include:

• SLR-series: stabilized on atomic transitions, narrow linewidth, optimally used for WS-Ultimate. Available in different wavelengths, such as: 780, 850, 895, 1532, and 1555 nm
• SL-series: Helium-Neon Lasers at 633nm+/-10MHz, and 633nm +/-25MHz
• Infrared Helium-Neon Laser: best for the Laser Spectrum Analyzer, LSA IR-III, at 3.39 micron

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HighFinesse optical spectrometers LSA and HDSA are designed to analyse the multi-line or broadband spectrum of (un-)known light sources like cw and pulsed lasers, gas discharge lamps, super luminescence diodes, semiconductor laser diodes and LEDs. They are suitable to analyze the spectrum of telecom signals, resolve Fabry-Perot modes of a gain chip, and produce a spectral measurement of gas absorption.

Main Benefits and Features

• Pulsed and cw lasers
• Extremely wide range: 192 nm - 11 µm
• High-speed Measurements
• Data control through easy access API
• (LabView, C++, MathLab, ...)
• External Trigger (TTL), optional
• Laser Control (PID), optional

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HighFinessePrecision Current Sources have been developed for experiments and quantum technologies in the areas of cold-atom and solid state physics. The linearly regulated BCS (Bipolar Current Source) and UCS (Unipolar Current Source) series deliver highly stable, low noise source currents for high precision magnetic field control. The current output is floating or is on a used defined potential. Ultrafast response to control signals and trigger functions, clear grounding, connection and signal isolation schemes make the integration of the current sources into complex experimental systems easy.

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