Industry and Applications

Scanning microscopy with slow electrons utilizes the principle of so-called cathode lens retarding of the electron beam just in front of the sample surface. In this way the electron beam is formed and focused at high energy and so the illuminating spot governing the image resolution can be very small for all energies of electrons between 15 keV and 1 eV. The unique detector solution provides very high efficiency of signal collection and high amplification even at the lowest energies.

Advantages and application examples:

The design of special electronics for the control of experiments and data processing including software represent an important part of the research activities of our group. This includes:

Laser interferometric measuring systems are based on the interference of two or more laser beams and represent a tool for the measurement of distances and other geometrical quantities. The scale of their potential application is very broad, and they may be used for the measurement of short distances in the range of millimeters or over meters or tens of meters. However, the primary resolution is in the range of tens of nanometer.

Systems designed at ISI are used for:

Absorption cells are made primarily for laser spectroscopy of gasses and to be used as references for laser frequency stabilization onto selected spectral components. The production technology of absorption cells in ISI is realized in a specialized glassmaking workshop, and the cells are custom designed mostly for national metrological institutions such as PTB in Germany, NIST in the USA and BIPM in France.

Examples and parameters of manufactured ce­lls:

Etalons of optical frequencies (wavelengths) are highly coherent lasers generating an output light with precise optical frequency (wavelength). The frequencies are in the order of hundreds of THz, which corresponds to the wavelength range of 500 – 1500 nm. These lasers operate as primary sources for the realization of the international definition of the unit of length – they are used by metrological institutions as sources of light for measuring laser interferometers.

High power ECL lasers are based on a similar technology of linewidth narrowing as the highly coherent ECL lasers for spectroscopy. They include an extended cavity with a wavelength selective mirror – an optical grating. Further linewidth narrowing was achieved through external “injection locking” using a Ti:Sa laser.

We designed:

Lasers designed at ISI are unique due to their high coherence and are suitable for:

• precision length measurements on the basis of laser interferometry;
• analysis of gases and other transparent media through laser spectroscopy.

ISI is equipped with laser sources with high coherence operating at the following wavelengths: 502 nm, 532 nm, 543 nm, 633 nm, 760 nm, 780 nm, 1064 nm, 1315 nm, 1540 nm. If required this set may be broadened to include additional wavelengths.

Examples of realized designs: