ISSN:
0142-2421
Keywords:
near-field microscopy
;
laser diodes
;
photocurrent spectroscopy
;
optics
;
semi-conductor lasers
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Physics
Notes:
Near-field photocurrent spectra of high-power laser diode arrays with different wave-guide characteristics are reported. Subwavelength spatial resolution is achieved by using a near-field fibre probe as the excitation source. The effect of the laser diode waveguide structure and of surface recombination processes on the near-field photocurrent image formation is discussed and analysed in terms of a beam propagation model. Experiments on laser diodes before and after accelerated ageing demonstrate the potential of the technique for analysing microscopic defect formation processes in optoelectronic devices.© 1997 John Wiley & Sons, Ltd.
Additional Material:
10 Ill.
Type of Medium:
Electronic Resource
