Coherent Nonlinear Laser Spectroscopy Near Field Scanning Microscope (DURIP)
Abstract
This program supported the acquisition of instrumentation for the development of a system for coherent nonlinear optical spectroscopy of semiconductor heterostructures at liquid helium temperatures with sub-wavelength resolution. The design of the system is based on the super-resolution imaging technology developed for near field optical scanning microscopy (NSOM). The work included design and construction of an NSOM head capable of working reliably at low temperature with minimal vibration. Additional instrumentation acquired for this program was a low temperature cryostat with insert and associated electronics for NSOM control and signal acquisition. Special challenges in this work included the design and development of an all electrical feedback system to locate the tip relative to surface with improved performance over standard more cumbersome optical techniques. The system remains under development (supported by a separate grant from ARO), but at the time of this report, initial low temperature performance has been demonstrated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 14, 1997
- Accession Number
- ADA344483
Entities
People
- Duncan G. Steel
Organizations
- University of Michigan