Novel Design of Current Driven Photonic Crystal Laser Diode

Morifuji, Masato; Nakaya, Yousuke; Mitamura, Takashi; Kondow, Masahiko

doi:10.1109/lpt.2009.2014171

Cited by 43 publications

(51 citation statements)

References 19 publications

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“…The variable parameters of our samples are lattice constant of the PC structure a, the radius of the air holes r, and the radius of the circular cavity R. According to the calculated curves of the threshold current density as a function of Q factor for a PC cavity laser [9,15], the Q factor of the cavity with a line defect waveguide should be higher than 4000, so that the threshold current density is small enough for RT-CW lasing. We calculated the Q factor of WGM by using 3-dimensional finite-difference time-domain (3D FDTD) method because only WGM had large Q factor in the cavity.…”

Section: Fabrication and Measurementmentioning

confidence: 99%

1.3 µm lasing of circular defect cavity photonic crystal laser with an AlOx cladding layer

Zhang

Hino

Kasamatsu

et al. 2017

IEICE Electron. Express

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We fabricated a photonic crystal (PC) laser having a circular defect cavity and a line defect output waveguide based on a heterostructure consisting of a slab layer with quantum dots and an AlO x cladding layer. The photonic crystal laser was excited by a 785 nm laser diode. Samples with different parameters have similar threshold values of about 25 µm Roomtemperature continuous-wave lasing operation at 1.3 µm range is confirmed by observing the spectrum of output light from the line defect waveguide. The wavelengths of the lasing modes show the dependence on the radius of circular resonator and the radius of air holes, which indicate that the lasing mode is the whispering-gallery mode. These results show the feasibility of realizing PC lasers using AlO x cladding layers.

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Section: Fabrication and Measurementmentioning

confidence: 99%

1.3 µm lasing of circular defect cavity photonic crystal laser with an AlOx cladding layer

Zhang

Hino

Kasamatsu

et al. 2017

IEICE Electron. Express

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“…The H2 and H3 cavities are defects with hexagonal shape consisting of seven and 19 missing air holes, respectively. We modified the cavities by shifting air holes in the periphery of the cavities so that the cavities have circular shape with radius R. Such a circular cavity generates a confined mode with high quality factor (Q-factor), called whispering gallery mode [6], [18]. A waveguide consisting of linearly aligned defects is set aside the cavity with a few rows of air holes between the cavity and waveguide.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Cavity–Waveguide Coupling in Two-Dimensional Photonic Crystals

2014

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We investigate theoretically cavity-waveguide coupling in 2-D photonic crystals. In using photonic crystal cavities in a device such as an optical circuit, the cavities must be coupled to a waveguide. For optimum performance, careful design of the device structure is necessary. In order to find out the rule for the design, we evaluate coupling strength by carrying out finite-difference time-domain (FDTD) calculations with systematic variation of structural parameters. Results are interpreted in terms of the density of the states of waveguide bands and symmetry of the cavity and waveguide modes. We found that the selection rule based on parity of the modes breaks down because of linewidth broadening, which arises from transition in finite time.

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“…For example, the optically pumped laser of a cavity resonator built in a slab PC has recently been successfully created. 8 In particular, an n-type AlAs cladding layer, a quantum-well active region, and a p-type AlAs cladding layer were deposited on an n-type GaAs substrate. 7 We recently proposed a laser structure with a circularly arranged cavity structure, pursuing the objective of an electrically driven PC laser.…”

Section: Introductionmentioning

confidence: 99%

“…2,3,8 In this respect, Kitagawa et al suggested that GaInN is a beneficial gain medium for PC devices. 2,3,8 In this respect, Kitagawa et al suggested that GaInN is a beneficial gain medium for PC devices.…”

Section: Introductionmentioning

confidence: 99%

Application of GaInNAs for the gain medium of a photonic crystal microcavity

Nagatomo

Kukita

Goto

et al. 2012

Journal of Vacuum Science &Amp; Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phen

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Articles you may be interested inInGaN light-emitting diodes with indium-tin-oxide photonic crystal current-spreading layerThe authors demonstrated the functionality of a circularly arranged submicron scale optical cavity with a GaInNAs gain medium and an AlO x cladding layer within a two-dimensional photonic crystal slab. The GaInNAs gain has negligible optical degradations due to process damage, probably stemming from the suppressed diffusion carriers and the small surface recombination velocity of the material. The calculated spectrum when using a finite different time domain simulation provides a cavity mode containing a whispering gallery mode at a wavelength close to 1.3 lm. An observation of the tuned spectral peaks related to the cavity mode shows this cavity has promise for future device applications.

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Novel Design of Current Driven Photonic Crystal Laser Diode

Cited by 43 publications

References 19 publications

1.3 µm lasing of circular defect cavity photonic crystal laser with an AlO<i><sub>x</sub></i> cladding layer

1.3 µm lasing of circular defect cavity photonic crystal laser with an AlO<i><sub>x</sub></i> cladding layer

Analysis of Cavity–Waveguide Coupling in Two-Dimensional Photonic Crystals

Application of GaInNAs for the gain medium of a photonic crystal microcavity

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