Optical Measurements
Application Examples
Optical Measurements
Application Examples
Dissipation in Optomechanical Resonators
G. D. Cole and M. Aspelmeyer of the University of Vienna( Austria) have analyzed the acoustic disspiation of microresonators using a cryogenic interferometry setup. In detail, their system utilizes a 4 He cryostat as sample chamber equipped with a stack of attocube ANPxyz51 positioners for aligning the sample with respect to an optical fiber. The micro-optomechanical resonator showed resonance frequencies of up to 4 MHz and Q-factors of 8000.
G. D. Cole et al., 23rd IEEE International Conference on Microelectromechanical Systems, Hong Kong SAR, China, 24-28 January 2010, TP133
3D g-Factor Mapping of Single Quantum Dots
The group of Richard Phillips at the University of Cambridge( UK) used cryogenic nanopositioners of the ANP51 series for their novel fibre-based confocal microscope for magnetophotoluminescence. The design allows them to turn the samples to arbitrary angles of tilt and rotation with respect to a magnetic field of up to 10 T at low temperatures, while maintaining focus on a single quantum dot.
T. Kehoe et al., Rev. Sci. Instrum. 81 013906( 2010)
Photoluminescence Measurements in Fields up to 28 T
The attocube positioners ANPxyz100 / LT have been used in a setup for optical measurements at the Grenoble High Magnetic Field Laboratory( France). The authors reported photoluminescence measurments on a single quantum dot in magnetic fields up to 28 T and were able to observe three pairs of Zeemansplit emission lines related to the recombination of a neutral exciton, a biexciton, and a charged exciton.
A. Babinski et al., Physica E 26, 190( 2005)