Kroemer Symposium, May 20, 2013
STANFORD
JSH 1
Mentoring and Great Times with Herb Kroemer
Herbert Kroemer Symposium, May 20, 2013
James S. Harris
Kroemer Symposium, May 20, 2013
STANFORD
JSH 2
If,in discussing a semiconductor problem, you cannot draw anEnergy Band Diagram,
then you don't knowwhat you are talking about.
Corollary: If you can, but don't,then your audience won't know
what you are talking about
Kroemer’s Lemma ofProven Ignorance
H. Kroemer-Prof. UCSB2000 Nobel lecture
Kroemer Symposium, May 20, 2013
STANFORD
JSH 3
Heterojunction Confusion
Kroemer Symposium, May 20, 2013
STANFORD
JSH 4
The Saga of Heterojunction Barriers
Kroemer Symposium, May 20, 2013
STANFORD
JSH 5
The Heterojunction Barrier Mystery Solved
Kroemer Symposium, May 20, 2013
STANFORD
JSH 6
Heterojunction LaserProc. IEEE, Dec. 1963
Kroemer Symposium, May 20, 2013
STANFORD
JSH 7
Microdisk Ge QW Photoluminescence
• Amplified spontaneous emission pumped by 900nm pulsed laser
• Two small peaks on each fringe
TE / TM or higher order mode
• PL intensity is super linear, estimated gain of 1500 cm-1
-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1350 1400 1450 1500 15500
2000
4000
6000
8000
Wavelength (nm)
PL
inte
nsity
(a.u
.)
10 mW20 mW30 mW40 mW60 mW