Modulation Bandwidth of Double Tunneling-Injection Quantum Dot Lasers: Effect of Out-Tunneling Leakage

Asryan, Levon V.; Kar, Saurav

doi:10.1109/jqe.2018.2886395

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Cited by 2 publications

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“…The dynamic characteristics are also improved in DTI and ABL lasers as compared to conventional lasers [18][19][20][21]. Modulation bandwidth is an important parameter describing the speed with which the optical output of diode lasers is varied with altering the input injection current [18].…”

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confidence: 99%

Optimizing the Quantum Dot Lasers for High-Speed Operation: Novel Versus Conventional Designs

Asryan

2021

Conference on Lasers and Electro-Optics

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confidence: 99%

Optimizing the Quantum Dot Lasers for High-Speed Operation: Novel Versus Conventional Designs

Asryan

2021

Conference on Lasers and Electro-Optics

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Quantum dot lasers with asymmetric barrier layers: Close-to-ideal threshold and power characteristics

Asryan¹

2019

Quantum Electron.

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A theory of static (threshold and power) characteristics of novel diode lasers – quantum dot (QD) lasers with asymmetric barrier layers (ABLs) – is developed. The barrier layers are asymmetric in that they have considerably different heights for the carriers of opposite signs. The ABL located on the electron- (hole-) injecting side of the structure provides a low barrier (ideally no barrier) for electrons (holes) [so that it does not prevent electrons (holes) from easily approaching the active region] and a high barrier for holes (electrons) [so that holes (electrons) injected from the opposite side of the structure do not overcome it]. The use of ABLs should thus ideally prevent the simultaneous presence of electrons and holes (and hence parasitic electron – hole recombination) outside the QDs. It is shown in this work that in such a case of total suppression of parasitic recombination, the QD lasers with ABLs offer close-to-ideal performance: the threshold current density is below 10 A cm−2 at any temperature, the absolute value of the characteristic temperature is above 1000 K (which manifests a virtually temperature-independent operation), the internal differential quantum efficiency is practically unity, and the light – current characteristic is linear at any pump current.

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Modulation Bandwidth of Double Tunneling-Injection Quantum Dot Lasers: Effect of Out-Tunneling Leakage

Cited by 2 publications

References 36 publications

Optimizing the Quantum Dot Lasers for High-Speed Operation: Novel Versus Conventional Designs

Optimizing the Quantum Dot Lasers for High-Speed Operation: Novel Versus Conventional Designs

Quantum dot lasers with asymmetric barrier layers: Close-to-ideal threshold and power characteristics

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