Midinfrared Dispersion Relations in 
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-Based Photonic Crystal Slabs Revealed by Fourier-Transform Angle-Resolved Reflection Spectroscopy

Chalimah, Siti; Ya, Yao; Ikeda, Naoki; Kaneko, Ken‐ichi; Hashimoto, Ryota; Kakuno, Tsutomu; Saitô, Shôzô; Kuroda, Takashi; Sugimoto, Yoshimasa; Sakoda, Kazuaki

doi:10.1103/physrevapplied.15.064076

Cited by 6 publications

(3 citation statements)

References 19 publications

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“…To match the We examined the accuracy of the PC fabrication by observing their angle-resolved reflection spectra with our homemade high-resolution setup integrated into the sample chamber of an FT-IR spectrometer (JASCO 6800). 23,25,26) The angle resolution was 0.3°and the frequency resolution was 1.0 cm −1 . Figure 6 shows normal-incidence reflection spectra of PC-QCL-2 with a = 1.340, 1.380, and 1.415 μm, which were measured before the air gap was filled with InP.…”

Section: Device Fabricationmentioning

confidence: 99%

“…Our PC was composed of a square array of InGaAs circular cylinders embedded in an InP cladding layer. We chose this PC design of a high symmetry because of the ease of their characterization by utilizing the polarization selection rules in the angleresolved reflection spectroscopy, 23) while it is known that PCs with lowered symmetry can improve the light extraction efficiency (EE) and the beam quality. 12) In this study, we integrated a PC structure with lowered symmetry and compared its performance with our previous study.…”

Section: Introductionmentioning

confidence: 99%

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Improved power and far-field pattern of surface-emitting quantum cascade lasers with strain compensation to operate at 4.3 μm

Ikeda

Chalimah

et al. 2022

Jpn. J. Appl. Phys.

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We fabricated surface-emitting quantum cascade lasers with photonic crystal resonators whose active layers were strain-compensated InGaAs/AlInAs multiple quantum wells to operate at 4.3 μm. We tested two kinds of square-lattice photonic crystals consisting of circular and pentagonal InGaAs cylinders as a unit structure. We examined their output power and far-field pattern to find that both of them were improved by lowering the photonic-crystal symmetry to achieve a high extraction efficiency. The maximum output power was 50 mW at 77 K and the far-field pattern was a single peak with a divergence angle smaller than 1° for the pentagonal cylinder structure. In addition, we attributed the lasing mode to a B2-symmetric (quadrupole) eigen state on the Γ point for the circular cylinder structure by observing the polarization dependence of the far-field pattern and comparing it with calculations by the k·p perturbation method.

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Section: Device Fabricationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improved power and far-field pattern of surface-emitting quantum cascade lasers with strain compensation to operate at 4.3 μm

Ikeda

Chalimah

et al. 2022

Jpn. J. Appl. Phys.

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“…An angle resolution of 0.3 deg was achieved by carefully preparing an unfocused incident light beam. 30,31) The black arrows show the frequencies of TEand TM-like modes of the E symmetry on the Γ point calculated by FEM, which are 2245 cm −1 and 2253 cm −1 , respectively. The measured peak frequencies are 2241 and 2255 cm −1 .…”

mentioning

confidence: 99%

Design and fabrication of photonic crystal resonators for single-mode and vertical surface emission from strain-compensated quantum cascade lasers operating at 4.32 μm

Saitô

Hashimoto

Kaneko

et al. 2021

Appl. Phys. Express

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Photonic crystal resonators with the C4v symmetry were designed and fabricated on quantum cascade lasers with a strain-compensated multiple quantum well to achieve single-mode and vertical surface emission at 4.32 μm. Their fabrication accuracy was confirmed by high-resolution reflection spectroscopy. The maximum output power was 10 mW at 77 K. A far-field pattern with a small divergence angle below 1 degree was observed. Its main peak had a donut shape, which was attributed to the spatial symmetry of the resonance mode of the photonic crystal.

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Topological band gaps and edge modes materialized by symmetric silicon-on-insulator photonic crystal slabs in the mid-IR range

Begum

Kuroda

et al. 2023

Phys. Rev. A

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Midinfrared Dispersion Relations in InP -Based Photonic Crystal Slabs Revealed by Fourier-Transform Angle-Resolved Reflection Spectroscopy

Cited by 6 publications

References 19 publications

Improved power and far-field pattern of surface-emitting quantum cascade lasers with strain compensation to operate at 4.3 μm

Improved power and far-field pattern of surface-emitting quantum cascade lasers with strain compensation to operate at 4.3 μm

Design and fabrication of photonic crystal resonators for single-mode and vertical surface emission from strain-compensated quantum cascade lasers operating at 4.32 μm

Topological band gaps and edge modes materialized by symmetric silicon-on-insulator photonic crystal slabs in the mid-IR range

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