Search
Menu
Cognex Corp. - Smart Sensor 3-24 GIF LB
Photonics Dictionary

mode sweeping

A form of laser output noise that is caused by thermal, mechanical, or acoustical disturbances of the cavity length. Mode sweeping occurs when the length of the laser cavity changes as a result of environmental conditions or changes in temperature, which cause the longitudinal modes to sweep across the gain curve causing fluctuations in output power. Very short lasers with a single longitudinal mode can fluctuate from max power to zero power and back to maximum power as temperature changes. The longer the laser the smaller the fluctuations of power.
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.