Buried heterostructure
WebAug 21, 2024 · Direct visualization of nanometer-scale properties of moiré superlattices in van der Waals heterostructure devices is a critically needed diagnostic tool for study of the electronic and optical ... WebDec 1, 1994 · Low temperature melt-etching and liquid phase epitaxial regrowth was used to fabricate buried heterostructure laser diode arrays, optical amplifiers and active …
Buried heterostructure
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WebWe report scanning voltage microscopy (SVM) results on actively driven buried heterostructure (BH) multiquantum-well (MQW) lasers that exhibit current blocking failure at high current injection operation. The measured two-dimensional image of local voltage distribution delineates the buried structures of the BH laser. The results, in combination … WebBuried-tunnel-junction VCSELs with single-mode emission have shown high performance [4]. However, the single-mode emission area is small (7 or 8 µm in diameter), and the …
WebThe high-frequency modulation characteristics of InGaAsP ridge waveguide lasers at 1.55 μm and etched mesa buried heterostructure (EMBH) lasers at 1.3 μm are investigated. Small-signal and large-signal circuit models are developed for both devices, and the main factors which influence the high-frequency modulation response are established. It is … WebHeterostructure definition: Any structure made from a heterojunction. .
WebDec 13, 2011 · A directly modulated 1.55-μm buried-heterostructure passive feedback laser exhibits a high modulation bandwidth of up to 34 GHz at moderate distributed-feedback (DFB) section currents between 20 and 60 mA. A very flat frequency response and a low alpha parameter have been demonstrated in the small signal modulation analysis. … WebAug 1, 1999 · 1.3-μm AlGaInAs buried-heterostructure lasers. 1.3-/spl mu/m AlGaInAs-InP strained multiple-quantumwell (MQW) buried-heterostructure (BH) lasers have been successfully fabricated. InP …
WebJul 23, 2024 · In that respect, the buried heterostructure (BH) approach, which is a standard and reliable telecommunications laser manufacturing technique, offers …
WebApr 6, 2005 · An in-situ cleaned and regrown 1.3-/spl mu/m InGaAIAs buried heterostructure laser was fabricated for the first time. The degradation of its driving current was about 1% after a 2000-hour aging ... city of gangs andrew daviesWebMeaning of heterostructure. What does heterostructure mean? Information and translations of heterostructure in the most comprehensive dictionary definitions … city of games victoriaWebThe buried heterostructure (BH) DFB lasers with C-band (1550 nm and vicinity) lasing wavelength were used for the study. Epitaxial layers were grown on n-type InP substrate using metal organic chemical vapor … city of gangster italianoWebTogether with the optimal basic design, buried heterostructure quantum cascade laser (BH-QCL) with semi-insulating regrowth offers a unique possibility to achieve an effective thermal dissipation and lateral single … don series computingWebApr 21, 2015 · Combination of AlGaInAs quantum wells with large differential gain and semi-insulating buried-heterostructure for reduction of the volume in active region achieved high-speed direct modulation. The fabricated lasers in the array lase with different wavelengths with stable single-longitudinal mode. Clear eye-opening and large mask … city of games reviewWebAbstract: 1.3-mum semi-insulating buried-heterostructure AlGaInAs-MQW distributed reflector lasers have shown very high slope value of relaxation oscillation frequency of 4.0 GHz/mA frac12. 25- and 40-Gb/s direct modulation … city of gangster cheatWebAug 1, 2010 · Here, we show high-speed direct modulation (3-dB modulation bandwidth of 5.5 GHz) of an ultracompact InP/InGaAsP buried heterostructure photonic-crystal laser at room temperature by optical pumping. don sera tamil movie songs download