Edge emitting mode-locked quantum dot lasers

Yadav, Amit; Chichkov, Nikolai B.; Avrutin, E.A.; Gorodetsky, Andrei; Rafailov, Edik U.

doi:10.1016/j.pquantelec.2022.100451

Cited by 19 publications

(4 citation statements)

References 231 publications

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“…The generation of ultrashort pulses remains an important part in modern physics [1][2][3][4][5][6][7][8][9][10] due to the huge number of potential applications such as atomic clock measurements [11], astrophysics [12], distance metrology [13], frequency comb spectroscopy [14] and others [15][16][17]. Naturally it is rather complicated to create compact sources of THz and mid-IR (MIR) ultrashort pulses for systems of non-stationary spectroscopy [18], frequency metrology [19], time domain spectroscopy [20], nondestructive testing [21], etc.…”

Section: Introductionmentioning

confidence: 99%

Coherent mode locking in a two-section laser with fast gain and absorber

Arkhipov,

Diachkova,

Pakhomov

et al. 2024

Preprint

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Coherent mode locking is based on the formation of 2π pulses of self-induced transparency in the absorbing medium and π pulses in the amplifying medium. In this regime it becomes possible to generate ultrashort laser pulses down to one oscillation cycle with a pulse duration being much shorter than the polarization relaxation time T2 of the amplifying and absorbing medium. In this article a two-section laser model with a ring resonator based on absorbing and amplifying medium with short relaxation times has been applied. We have demonstrated a self-starting regime of coherent mode locking with picosecond and femtosecond laser pulses using numerical simulations for the given model. In addition, we have shown that there is a significant influence of generation frequency detuning on laser pulse duration and intensity. Moreover, we have compared our numerical results with an analytical model of a coherent mode-locked laser based on the area theorem. We believe that the findings of this work can open a pathway towards the practical application of mode locking in mid-IR and THz quantum cascade lasers.

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Section: Introductionmentioning

confidence: 99%

Coherent mode locking in a two-section laser with fast gain and absorber

Arkhipov,

Diachkova,

Pakhomov

et al. 2024

Preprint

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“…These inherent characteristics enable SCNSs to meticulously tailor their optical and electronic properties, rendering them as promising candidates for a wide range of applications. These applications span diverse fields, including light-emitting diodes (LEDs) (Terada et al, 2022;Lu et al, 2023), lasers (Rafailov et al, 2007;Yadav et al, 2023), photovoltaic devices (Hu et al, 2021;Wang et al, 2023), quantum computation (Wang et al, 2022), and spintronics . Given the extensive range of their utilities, SCNSs have attracted considerable attention from both theoretical and experimental researchers (Jiang et al, 2023;Ed-Dahmouny et al, 2023), particularly in recent years.…”

Section: Introductionmentioning

confidence: 99%

Efficient Energy Level Calculations in InP 2D-Quantum Box with Two Distinct Potentials Using the Sparse Numerov Method

KOÇ

2024

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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In this study, energy level calculations for an InP 2D quantum box structure with two distinct (infinite potential power-exponential) potential potentials have been conducted using the sparse Numerov method. The 2D Schrödinger equation has been transformed in accordance with the sparse Numerov approach, followed by the creation of the solution matrix employing appropriate finite difference expressions. A comparative analysis of calculation results has been performed with respect to CPU time, memory usage, and ground state energy for both O(h^4) and O(h^6) accuracy. The suitability of the sparse Numerov method for 2D nanostructures has been thoroughly discussed. The results revealed that the sparse Numerov approach yields physically meaningful and rational outcomes in the InP 2D quantum box structure. Importantly, it demands significantly lower CPU time and memory resources compared to the classical Numerov method, emphasizing its practical applicability in this context.

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“…Further steps towards compactness of the pulsed THz spectroscopic and imaging setups were taken with the introduction of the quantum-dot (QD) based PCAs (QDP-CAs) [9]. The QD based photoconductive substrate provides an inherent compatibility [10] with the QD ultrafast lasers [11]. Since introduction, QDPCA have proven to be an efficient THz emitters capable of generating tunable CW [12] and pulsed [9], [13] THz radiation.…”

Section: Introductionmentioning

confidence: 99%

Enhanced THz Generation From Interdigitated Quantum Dot Based Photoconductive Antenna Operating in a Quasi-Ballistic Regime

Gorodetsky

Lavrukhin

Пономарев

et al. 2023

IEEE J. Select. Topics Quantum Electron.

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In this paper, we present a new approach for the enhancement of pulsed terahertz (THz) generation in quantum dot (QD) based photoconductive antennas (PCA). We demonstrate the benefits of the combination of a QD substrate based PCA and an interdigitated electrodes topology which allows the photocarriers to reach the antenna terminals in a quasi-ballistic regime and immediately contribute to the THz emission. A 50fold increase in the generated THz power is observed. Such enhancement is made possible by unique combination of QD substrate properties, such as very high electric and thermal breakdown ruggedness, high carrier mobility, and yet short carrier lifetimes, compared to typical low temperature grown materials. We expect this solution to become favourable for development of powerful compact THz emitters.

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Edge emitting mode-locked quantum dot lasers

Cited by 19 publications

References 231 publications

Coherent mode locking in a two-section laser with fast gain and absorber

Coherent mode locking in a two-section laser with fast gain and absorber

Efficient Energy Level Calculations in InP 2D-Quantum Box with Two Distinct Potentials Using the Sparse Numerov Method

Enhanced THz Generation From Interdigitated Quantum Dot Based Photoconductive Antenna Operating in a Quasi-Ballistic Regime

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