Low threshold current single-cell hexapole mode photonic crystal laser

In recent years there have been significant advances in the size and characteristics of small lasers, i.e. lasers with dimensions or modes sizes close to or smaller than the wavelength of emitted light. This work has primarily been led by innovative use of new materials and cavity designs. This article reviews some of the latest developments, particularly in metallic and plasmonic lasers, improvements in small dielectric lasers, and the emerging area of small bio-compatible/bioderived lasers. We examine the different approaches employed in small lasers to reduce size and how they lead to significant differences , particularly between metal and dielectric cavity lasers. We present potential applications for the various forms of small lasers and indicate where further developments are required.

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“…102 ), c, photonic crystal laser (from Ref. 103 ), d, metallic non-plasmon mode laser (from Ref. 17 ), e, localized plasmon mode laser (from Ref.…”

Section: Box: Exciton-polariton Lasersmentioning

confidence: 99%

Advances in small lasers

2014

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“…The monopole and hexapole modes with a central intensity node are useful for current injection by placing a central post underneath the photonic crystal slab because the post at the node site does not cause an appreciable increase in optical loss. 3,8 On the other hand, the dipole mode with a central intensity antinode is useful for demonstrating a single photon source by positioning a single quantum dot at the center of the cavity. 9 Therefore, the excitation and identification of a desired cavity mode should be achieved clearly and efficiently.…”

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confidence: 99%

Polarization-resolved far-field measurement of single-cell photonic crystal lasing modes

Kang

Kim

Jeong

et al. 2011

Applied Physics Letters

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This paper reports the unambiguous identification of lasing modes observed in a single-cell photonic crystal cavity using a solid angle scanning system. The polarization-resolved far-field measurements showed distinctive features of each mode and distinguished it from the other modes in contrast to conventional optical characterization methods. Monopole, quadrupole, and hexapole lasing modes were observed and identified, showing good agreement with numerical simulations. Our understanding of the lasing modes will be useful for determining practical applications as promising light sources in ultracompact photonic integrated circuits.

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“…Recently, the electrically-driven, single mode, single-cell PhC lasers have been reported in the monopole [1] and hexapole [2] modes. The photons coming out of the monopole mode is highly diverging and can not be easily collected using conventional optics.…”

Section: Introductionmentioning

confidence: 99%