Large area photonic crystal quantum cascade laser with 5 W surface-emitting power

Wang, Zhixin; Liang, Yong; Meng, Bo; Sun, Yan-Ting; Omanakuttan, Giriprasanth; Gini, E.; Beck, Mattias; Sergachev, Ilia; Lourdudoss, Sebastian; Faist, Jérôme; Scalari, Giacomo

doi:10.1364/oe.27.022708

Cited by 39 publications

(18 citation statements)

References 26 publications

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“…PCSELs are a kind of novel surface-emitting semiconductor lasers, which have not only the typical advantages of surface-emitting lasers but also the single-lobed narrow beam with higher output power [16][17][18][19][20] attributed to the large-area coherent resonance. Hence, studying the characteristics of PCSELs under pulsed conditions is significant for providing efficient, stable and no-collimation required laser sources for LiDAR system where several nanosecond long optical pulses are needed [21].…”

Section: Introductionmentioning

confidence: 99%

Photonic Crystal Surface Emitting Laser Operating in Pulse-Periodic Regime with Ultralow Divergence Angle

et al. 2021

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The nanosecond-level pulse-operation characteristics of photonic-crystal surface-emitting lasers (PCSELs) with ultralow divergence were investigated in detail. We demonstrate a maximum peak output power of 14 W for a current pulse width of 9 ns, which is about 28 times the saturated power under continuous wave (CW) operation. The full width at half maximum (FWHM) of the optical response pulse is about 3 ns wider than the current pulse. The maximum repetition frequency reaches 400 kHz at 10 A without significant degradation of output power while the value is 100 kHz at 40 A. Moreover, the multimode behavior of the PCSEL at a high peak current was analyzed.

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Section: Introductionmentioning

confidence: 99%

Photonic Crystal Surface Emitting Laser Operating in Pulse-Periodic Regime with Ultralow Divergence Angle

et al. 2021

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“…Further development of Dirac-like cone-based PCSELs is limited by the following constraints: the index contrast between the pattern and semiconductor cladding is too low to design a DCZIM, and the quality factors of Diraclike cone modes are too close to each other to provide enough mode selection for single-mode lasing 109,110 . The first constraints might be overcome by carefully selecting materials for the pattern and cladding.…”

Section: Lasersmentioning

confidence: 99%

Dirac-like cone-based electromagnetic zero-index metamaterials

Chan

Mazur

2021

Light Sci Appl

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Metamaterials with a Dirac-like cone dispersion at the center of the Brillouin zone behave like an isotropic and impedance-matched zero refractive index material at the Dirac-point frequency. Such metamaterials can be realized in the form of either bulk metamaterials with efficient coupling to free-space light or on-chip metamaterials that are efficiently coupled to integrated photonic circuits. These materials enable the interactions of a spatially uniform electromagnetic mode with matter over a large area in arbitrary shapes. This unique optical property paves the way for many applications, including arbitrarily shaped high-transmission waveguides, nonlinear enhancement, and phase mismatch-free nonlinear signal generation, and collective emission of many emitters. This review summarizes the Dirac-like cone-based zero-index metamaterials’ fundamental physics, design, experimental realizations, and potential applications.

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“…where α is the vertical radiation loss, ΓQW is the field confinement factor in MQWs. For PCSEL device with large PhC area (for instance >400 µm length), the in-plane loss and the internal loss are negligible [36]- [38], so only the vertical radiation loss is considered and calculated by Eq. (7),…”

Section: Laser Design and Athermal Propertiesmentioning

confidence: 99%

Design of GaN-Based PCSEL With Temperature-Insensitive Lasing Wavelength

Liu

Wang

et al. 2021

IEEE Photonics J.

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Considering the compensation of thermo-optic coefficients (TOC) between GaN-based cavity and TiO2 photonic crystal (PhC) layer, we have theoretically designed a photonic crystal surface emitting laser (PCSEL) with temperature-insensitive wavelength. The structure includes a freestanding GaN membrane with embedded multiple InGaN/GaN quantum well (QW) layer and the top TiO2 PhC layer. The high refractive index (RI) of PhC and the freestanding membrane cavity structure cooperate to enable a stronger field-coupling in PhC, thus fulfill the athermal coupling condition. Interestingly, the wavelength temperature dependence is only 0.0015 nm/°C for such PCSEL with a 82% PhC confinement factor, and its athermal property is proportional to the field confinement factor in TiO2 PhC layer. To illustrate, a general formula has been developed after the investigations of thermo-optic effect and thermal expansion effect.

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Large area photonic crystal quantum cascade laser with 5 W surface-emitting power

Cited by 39 publications

References 26 publications

Photonic Crystal Surface Emitting Laser Operating in Pulse-Periodic Regime with Ultralow Divergence Angle

Photonic Crystal Surface Emitting Laser Operating in Pulse-Periodic Regime with Ultralow Divergence Angle

Dirac-like cone-based electromagnetic zero-index metamaterials

Design of GaN-Based PCSEL With Temperature-Insensitive Lasing Wavelength

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