Purified frequency modulation of a quantum cascade laser with an all-optical approach

Chen, Peng; Zhou, Haijing; Zhu, Li-Guo; Chen, Tao; Liu, Qiao; Wang, Detian; Li, Jiang; Peng, Qixian; Chen, Gang; Li, Zeren

doi:10.1364/ol.42.004506

Cited by 10 publications

(7 citation statements)

References 17 publications

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“…In general, in bismuth-doped glass fiber, the structure of the PL spectrum can be quite complex, as evidenced by the published results [45][46][47][48][49][50][51][52][53][54][55]. Nevertheless, it is possible to distinguish frequencies that correspond to the maximum values of the spectral curve of the PL.…”

Section: Analysis Of the Results Observed In Bismuth-doped Mediamentioning

confidence: 99%

Axions in Dispersive Media

Ogluzdin¹

2021

Preprint

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In the review, based on the analysis of the results published in the works of domestic and foreign researchers, a variant of an unconventional interpretation of the photoluminescence of dispersive media in the energy range of 0.5 - 3 eV is proposed. The interpretation meets the requirements of the energy conservation law for photons and axions participating in the photoluminescence process. The participation of axions in the process is consistent with Primakov's hypothesis. The role of nonradiative relaxation at the stage of axion decay is noted. The axion lifetimes are estimated for a number of dispersive media.

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Section: Analysis Of the Results Observed In Bismuth-doped Mediamentioning

confidence: 99%

Axions in Dispersive Media

Ogluzdin¹

2021

Preprint

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“…We know that Δn 0 is induced by electron-hole pairs, and can be described by the following equation [12]: (8) Combining Equations 2, 3 and 4, we obtain the following: (9) which yields: (10) where e is the charge of an electron, λ is the wavelength of the laser, N and P are the numbers of the electrons and holes, ε 0 is the permittivity in a vacuum, and and are the effective electron and hole masses, respectively.…”

Section: Numerical Approachmentioning

confidence: 99%

Numerical study on all-optical modulation characteristics of quantum cascade lasers

Wei¹,

Zhou²,

Li³

et al. 2022

Beilstein J. Nanotechnol.

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To explain the phenomenon of all-optical modulation of quantum cascade laser (QCL), and explore the physics in QCL’s gain medium which consists of multiple of dielectric nanostructures with high refractive index under light injection, we modified the 1½-period model to calculate values of electron population and lifetime in each subband which is separated by the nanostructures, optical gain, current and number of photons in the cavity of a mid-infrared QCL modulated with near-infrared optical injection. The results were consistent with an experiment, where the injected light increases the electron population and lifetime, but does not affect the optical gain obviously. Our study can be helpful for optimizing its use and dielectric nanostructure design.

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“…And the PL spectrum can accurately and rapidly evaluate all parameters. In addition, the all-optical modulation is not only determined by the pump photon energy [6], but also the hot carrier effect has played a significant role [20]. So the numerical calculation is impossible to replace the PL spectrum experiment in evaluate all-optical modulation of QCL.…”

Section: Simulationmentioning

confidence: 99%

Rapid Evaluation of All-Optical Modulation in Quantum Cascade Laser Using Photoluminescence Spectrum

et al. 2018

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All-optical modulation in a quantum cascade laser (QCL) can be rapidly evaluated using a photoluminescence (PL) spectrum. The PL spectrum reflects the electron transition rate of the sub-bands of the active region of a QCL. The peak position, amplitude, and displacement of the PL spectrum can be used to determine the optimal wavelength, spot position, the laser incident angle, optical power, and displacement in the electric field of the near-infrared laser. This PL spectrum approach is rapid, accurate, and simple. Furthermore, it can be used to optimize high-speed all-optical modulation of QCLs for use in free-space optical communication and molecular-detection applications.

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Purified frequency modulation of a quantum cascade laser with an all-optical approach

Cited by 10 publications

References 17 publications

Axions in Dispersive Media

Axions in Dispersive Media

Numerical study on all-optical modulation characteristics of quantum cascade lasers

Rapid Evaluation of All-Optical Modulation in Quantum Cascade Laser Using Photoluminescence Spectrum

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