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	Author	Cao, Q.; Yoon, S. F.; Tong, C. Z.; Ngo, C. Y.; Liu, C. Y.; Wang, R.; Zhao, H. X.
	Title	Two-state competition in 1.3 μm multilayer InAs/InGaAs quantum dot lasers			Type	Journal Article
	Year	2009	Publication	Applied Physics Letters	Abbreviated Journal	Appl. Phys. Lett.
	Volume	95	Issue	19	Pages	3
	Keywords	2DEG
	Abstract	The competition of ground state (GS) and excited state (ES) is investigated from the as-grown and thermally annealed 1.3 μm ten-layer p-doped InAs/GaAs quantum dot (QD) lasers. The modal gain competition between GS and ES are measured and analyzed around the ES threshold characteristics. Our results show that two-state competition is more significant in devices with short cavity length operating at high temperature. By comparing the as-grown and annealed devices, we demonstrate enhanced GS and suppressed ES lasing from the QD laser annealed at 600 °C for 15 s.
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	Notes				Approved	no
	Call Number	RPLAB @ gujma @			Serial	673
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