Abstract
In this paper, a computer controlled system is described, which provides data management and position control for time resolved measurement of near and far field, along with charge carrier concentration distributions of semiconductor lasers. Of particular interest is the manner in which microprocessor control of inexpensive motorised micrometers is used to provide accurate repeatable movements on submicron scales. Due to its noise reduction capability through computer averaging, this system has been operated in conjunction with a 50 ps risetime photodiode, and thus is believed to allow time resolved measurement on the shortest reported timescales. The system provides a further advantage in that experimental data may be stored to give easy access for further processing.
| Original language | English |
|---|---|
| Pages (from-to) | 289-294 |
| Number of pages | 6 |
| Journal | Optics Communications |
| Volume | 45 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 1 May 1983 |
Funding
The authors would like to thank Mr. B Herscher for many helpful discussions. They would also like to thank Dr. R.G. Plumb of Standard Telecommunication Laboratories Ltd., Harlow, England for the supply of the twin stripe lasers used in this work. One of the authors (I.H. White) would like to thank the Department of education for Northern Ireland for a personal maintenance grant. The UK Science and Engineering Research Council are thanked for supporting this work with the award of an equipment grant.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics