NLS-Glossary

Autoclave compatible

Autoclave compatible labels are specialist self-adhesive labels which are able to withstand the specific environment of an autoclave. These machines are used for industrial, scientific and medical purposes, creating an environment of increased temperature and pressure.
an autoclave is a machine used to carry out industrial and scientific processes requiring elevated temperature and pressure in relation to ambient pressure/temperature. Autoclaves are used in medical applications to perform sterilization and in the chemical industry to cure coatings and vulcanize rubber and for hydrothermal synthesis. Industrial autoclaves are used in industrial applications, especially in the manufacturing of composites.

Autocollimation

is an optical setup where a collimated beam (of parallel light rays) leaves an optical system and is reflected back (internal).                                                                                      

Autocollimator

is an optical instrument that is used to measure small angular differences. This device is very sensitive to change in angles and provides a very accurate measurement of angular differences. It is basically a combination of an infinity telescope and a collimator. Autocollimators are mainly used to align optical components and measure optical and mechanical deflections.

Autocorrelator

An autocorrelator is used to measure the pulse duration of femtosecond and picosecond laser systems. The basic principle of an APE autocorrelator for pulse duration measurement is to overlay a pulse with a variable time-delayed copy of itself. Both pulses are made to overlap in a non-linear crystal and the generated signal is then recorded. The pulse duration can be determined from the measurement of the time delay and the intensity of the generated signal.

Autodiscrimination

The ability of bar code scanning and decoding equipment to recognize more than one symbology.                                                                                                                            

Avalanche breakdown

is the enormous increase in the reverse current in a pn junction when the applied reverse field is sufficiently high to cause the generation of electron hole pairs by impact ionization in the space charge layer.