An Ultrasensitive Laser Interferometer for Detecting Motion with Picometer Resolution
Mentor 1
Palash Banerjee
Location
Union Wisconsin Room
Start Date
24-4-2015 2:30 PM
End Date
24-4-2015 3:45 PM
Description
I present an ultrasensitive laser interferometer and its applications to study the vibrations of miniature mechanical systems. This instrument has been integrated into an ultrahigh vacuum setup to detect minute changes in the frequency of magnetic cantilevers, which are about 225 microns long, as they are subject to a changing magnetic field. The interferometer itself consists of an infrared laser, focusing lens, and photo receiver along with various controls. We are able to detect changes in position as small as two picometers (1 pm=10^(-12) m). We will continue using this device in our experiments as we study other mechanical setups.
An Ultrasensitive Laser Interferometer for Detecting Motion with Picometer Resolution
Union Wisconsin Room
I present an ultrasensitive laser interferometer and its applications to study the vibrations of miniature mechanical systems. This instrument has been integrated into an ultrahigh vacuum setup to detect minute changes in the frequency of magnetic cantilevers, which are about 225 microns long, as they are subject to a changing magnetic field. The interferometer itself consists of an infrared laser, focusing lens, and photo receiver along with various controls. We are able to detect changes in position as small as two picometers (1 pm=10^(-12) m). We will continue using this device in our experiments as we study other mechanical setups.
