TITLE

Unidirectional lasing from InGaN multiple-quantum-well spiral-shaped micropillars

AUTHOR(S)
Chern, G. D.; Tureci, H. F.; Stone, A. Douglas; Chang, R. K.; Kneissi, M.; Johnson, N. M.
PUB. DATE
September 2003
SOURCE
Applied Physics Letters;9/1/2003, Vol. 83 Issue 9, p1710
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report unidirectional emission from lasing in In[sub 0.09]Ga[sub 0.91]N/In[sub 0.01]Ga[sub 0.99]N multiple-quantum-well spiral micropillars. Our imaging technique shows that the maximum emission comes from the notch of the spiral microcavities at an angle about 40° from the normal of the notch. At room temperature, the spiral microcavity lases near 400 nm when optically pumped with 266 or 355 nm light. A reduction in the lasing threshold and an improvement in unidirectionality occurs when the microcavity is selectively pumped near its boundary. © 2003 American Institute of Physics.
ACCESSION #
10665046

 

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