Control of laser mirror spacing and angular orientation is very important for laser frequency and mode stability. Interferometric methods have been used to measure such small displacements. For example, using a Mach-Zehnder interferometer, a stable He-Ne laser, and a frequency counter, submicrometer displacement can be measured. Because the Mach-Zehnder interferometer is very sensitive to mechanical vibration and misalignment, this technique is rather difficult, and expensive equipment, such as stable lasers and fast counters, is needed.

© 1982 Optical Society of America

PDF Article


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription