site stats

Buried heterostructure

WebThe main focus of this work is the fabrication and experimental demonstration of a buried heterostructure (BH) photonic crystal laser bonded to a silicon wafer, illustrating the effective single-platform active-passive material integration method. KW - Photonic crystals. KW - Indium phosphide. KW - III-V semiconductor materials. KW - Cavity ... WebInGaAsP/InP buried heterostructure (BH) lasers with semi-insulating InP current blocking layers have been extensively studied as ultra-high speed light sources because of their small parasitic capacitance. So far they have been demonstrated using vapor phase epitaxy (VPE) [1-5] and metalorganic chemical vapor deposition (MOCVD) epitaxy [6,7].

1.3‐µm buried‐heterostructure VCSELs with GaAs/AlGaAs …

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 … 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 ... grave of music https://jacobullrich.com

Two-dimensional profiling of carriers in a buried …

WebApr 7, 1998 · We report on the fabrication and characterization of buried heterostructure quantum cascade (BH-QC) lasers. The buried heterostructure is formed by regrowth of … 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 … WebTogether 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 … grave of mussolini

Scanning voltage microscopy on buried heterostructure …

Category:(PDF) Highly Reliable AlGaInAs Buried Heterostructure Lasers for ...

Tags:Buried heterostructure

Buried heterostructure

Buried heterostructure quantum cascade lasers - Semantic Scholar

WebHeterostructure definition: Any structure made from a heterojunction. . 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 …

Buried heterostructure

Did you know?

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 … WebApr 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 …

WebDec 1, 2005 · This paper reviews the effects of metal-contact-type buried-heterostructure (BH) interfaces and substrate quality on the reliability of BH distributed-feedback (DFB) InGaAsP/InP lasers. For electrical contact, the significant improvement in device lifetime using Au/Ti/Pt/Au p-metallization over Au/Zn/Au will be shown. The temperature and … WebAug 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.

WebMeaning of heterostructure. What does heterostructure mean? Information and translations of heterostructure in the most comprehensive dictionary definitions … 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. …

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 ...

WebJan 4, 2024 · “Demonstration of a quick process to achiev e buried heterostructure quantum cascade laser leading to high power and wall plug e ffi ciency,” Opt. Eng. 53 (8), 087104 (2014). 12. choate vs inchoateWebAbstract: 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 … grave of nicholas iiWebJul 29, 2012 · The heterostructure is fabricated on top of an oxidized silicon wafer (violet and grey). b, Optical image of the device before extracting a cross-sectional sample. The graphene Hall bar is ... choate waitlistWebJun 4, 1998 · Results of a study of the electrical derivative characteristics of InGaAsP buried heterostructure lasers are presented. By considering current‐leakage paths and … grave of neil armstrongWebSep 1, 2013 · The resulting buried-heterostructure lasers are compared to a reference laser from the same wafer, but with SiO 2 insulation; all three have very similar threshold … grave of ned beattyWebJul 23, 2024 · In that respect, the buried heterostructure (BH) approach, which is a standard and reliable telecommunications laser manufacturing technique, offers … grave of mark twainWebThe use of narrow-ridge buried heterostructure waveguides and thermally optimized packaging is presented. Over 9.3% wall plug efficiency is reported at room temperature from a single device producing over 0.675 W of continuous-wave output power. Wall plug efficiencies greater than 18% are also reported for devices at a temperature of 150 K ... choate wallingford