Temperature insensitivity of the threshold current density in exciton-dominated wide energy gap quantum wire lasers

2010 ◽  
Vol 49 (5) ◽  
pp. 054201 ◽  
Author(s):  
Faquir C. Jain
Keyword(s):  
Current Density ◽  
Quantum Wire ◽  
Energy Gap ◽  
Threshold Current ◽  
Threshold Current Density ◽  
Wide Energy

Low-Threshold Current Density GaInAsP/InP Quantum-Wire Distributed Feedback Lasers Fabricated by Low-Damage Processes

2007 ◽  
Vol 46 (No. 2) ◽  
pp. L34-L36 ◽  
Author(s):  
Yoshifumi Nishimoto ◽  
Koji Miura ◽  
Hideki Yagi ◽  
Dhanorm Plumwongrot ◽  
Kazuya Ohira ◽  
...  
Keyword(s):  
Current Density ◽  
Quantum Wire ◽  
Threshold Current ◽  
Threshold Current Density ◽  
Distributed Feedback ◽  
Distributed Feedback Lasers ◽  
Low Threshold ◽  
Damage Processes

Observation of stimulated radiative emission from normal to superconducting metal junctions

1969 ◽  
Vol 47 (11) ◽  
pp. 1171-1176 ◽  
Author(s):  
W. D. Gregory ◽  
L. Leopold ◽  
D. Repici
Keyword(s):  
Current Density ◽  
Free Space ◽  
Energy Gap ◽  
Threshold Current ◽  
Threshold Current Density ◽  
Stimulated Emission ◽  
Point Contacts ◽  
Radiative Emission ◽  
Superconducting Metal

Approximately 10−7 W of radiation at the energy-gap frequency of Ta (3 mm wavelength at 4.26 °K) has been observed traveling through free space from specially formed Ta–Al point contacts. This radiation appears discontinuously at a threshold current density of about 105 A/cm2, disappears as the sample is warmed above Tc, and appears to be tunable by changing the energy gap with temperature. These results are consistent with our predictions of stimulated emission from normal–superconductor contacts.

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