Differential gain in bulk and quantum well diode lasers

Differential gain in bulk and quantum well diode lasers

Differential gain (g/sup '/) of bulk and single-quantum-well (SQW) lasers was determined from threshold current density and differential quantum efficiency measurements. The threshold measurement technique was used to show that g/sup '/ is a function of cavity length (L) in SQW lasers and...

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Veröffentlicht in:IEEE photonics technology letters 1991-12, Vol.3 (12), p.1057-1060
Hauptverfasser: Zmudzinski, C.A., Zory, P.S., Lim, G.G., Miller, L.M., Beernink, K.J., Cockerill, T.L., Coleman, J.J., Hong, C.S., Figueroa, L.
Format: Artikel
Sprache:eng
Schlagworte:
Chemical lasers
Diode lasers
Electron optics
High speed optical techniques
Optical bistability
Optical losses
Optical switches
Pulsed laser deposition
Quantum well lasers
Threshold current
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Zusammenfassung:Differential gain (g/sup '/) of bulk and single-quantum-well (SQW) lasers was determined from threshold current density and differential quantum efficiency measurements. The threshold measurement technique was used to show that g/sup '/ is a function of cavity length (L) in SQW lasers and independent of L in bulk lasers. It was found that g/sup '/ of long SQW lasers (1000 mu m) is about 7*10/sup -16/ cm/sup 2/, approximately two times that of bulk lasers. At short cavity lengths (250 mu m), g/sup '/ is about the same for both laser types.< >
ISSN:1041-1135
1941-0174
DOI:10.1109/68.117999