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Wavelengthmeters

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 interferometers that are read out by photodiode arrays. The high absolute accuracy is achieved by use of solid state, non-moving optics.

Some of the main benefits and properties of our wavelengthmeters are...

Standard: 350 – 1120 nm  UV: 248 – 1100 nm  UV-II: 192 – 800 nm  IR: 630 – 1750 nm  IR-II: 1000 – 2250 nm  ultra sensitive: < 10 nJ @ 500 nm  high-speed measurement: up to 500 Hz

cw & pulsed  quick coupling  1 - 8 inputs  USB 2.0  spectral profile monitoring  linewidth measurement

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. Standard features of the basic wavelength meters are:

Measurement of wavelength, frequency & co.:

The measurement is displayed on the computer via the supplied user-friendly software. Installation and setup is straight forward. The displayed result may be switched between wavelength, frequency, wavenumber or -energy to suit the test requirements. The displayed interferometer pattern provides information regarding the spectral profile of pulsed or continuous wave laser sources.

Long-term measurement:

This application records all measurement results and displays it graphically along with calculating the mean, max. and min., as well as standard deviation. Many long-term windows can be open simultaneously to display all available information of up to 8 laser sources (multichannel option).

Record- and Replay Mode:

This operation mode records all interferometer data and allows for a subsequent play-back.

Average:

Two different arithmetic averaging techniques may be applied on 0 to 999 measurement points.

Data-Control:

An easy access API provides a fast interface to all functionalities for controlling the WLM and accessing its data. Source code for sample programs is included.

For further information about our wavelengthmeters please download the
Product Sheets 2009 [PDF-Version, 1.8 MB] or contact us.

You are welcome to have a look at our easy to hand demo computer programs showing the feel of a real measurement!