Continuous-wave subwavelength microdisk lasers at λ = 153 µm

Liu, Zhijun; Shainline, Jeffrey M.; Fernandes, Gustavo E.; Xu, Jimmy; Chen, Jianxin; Gmachl, Claire F.

doi:10.1364/oe.18.019242

Cited by 23 publications

(18 citation statements)

References 19 publications

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“…Subwavelength microdisk lasers have been demonstrated at RT, but in pulse mode in visible [19] and near infrared [13] wavelength ranges. But CW operation [20] is still limited to low temperature. Therefore an unambiguous demonstration of a RT CW nanolaser with electrical injection represents a significant advance in the development of nanoscale lasers.…”

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confidence: 99%

Record performance of electrical injection sub-wavelength metallic-cavity semiconductor lasers at room temperature

et al. 2013

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Abstract:We demonstrate a continuous wave (CW) sub-wavelength metallic-cavity semiconductor laser with electrical injection at room temperature (RT). Our metal-cavity laser with a cavity volume of 0.67λ 3 (λ = 1591 nm) shows a linewidth of 0.5 nm at RT, which corresponds to a Qvalue of 3182 compared to 235 of the cavity Q, the highest Q under lasing condition for RT CW operation of any sub-wavelength metallic-cavity laser. Such record performance provides convincing evidences of the feasibility of RT CW sub-wavelength metallic-cavity lasers, thus opening a wide range of practical possibilities of novel nanophotonic devices based on metal-semiconductor structures.

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confidence: 99%

Record performance of electrical injection sub-wavelength metallic-cavity semiconductor lasers at room temperature

et al. 2013

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“…Selfheating effects such as Joule heating and surface recombination become more prominent as device size shrinks, and a device that relies on heat dissipation through the semiconductor stack has a smaller conduit for heat dissipation as the radius of the stack is decreased. The analysis of CW optically-pumped nanodisk lasers operating at 45 K in [36] used this approach in a thermal simulation of device operating temperature with decreasing pedestal radius, comparing the tradeoff between increased laser heating and improved cavity Q and confinement factor (at fixed temperature). They found, for their device geometry, an optimum range of pedestal radii for which laser heating was near its minimum value and cavity Q and confinement factor were near their maximum values.…”

Section: Nanolaser Design For Improved Thermal Performancementioning

confidence: 99%

“…The authors of [36] chose InP for their CW opticallypumped nanodisk pedestal material over the AlGaAs used in previous nanodisk lasers, due to its higher thermal conductivity, although they did not quantify the amount of improvement through thermal simulation.…”

Section: Nanolaser Design For Improved Thermal Performancementioning

confidence: 99%

“…An analysis of a device's temperature performance requires calculation of its self-heating, such as the simulation performed by Liu et al [36] for a continuous wave (CW) optically-pumped device, or by Gu et al [23] for a CW electrically-pumped device. This self-heating, tempered by the nanolaser's ability to dissipate heat, can cause a significant temperature rise in the semiconductor, which in turn affects material parameters and therefore the nanolaser's QED effects as well as optical behavior.…”

Section: Introductionmentioning

confidence: 99%

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Temperature effects in metal-clad semiconductor nanolasers

Smalley

Shane

et al. 2015

Nanophotonics

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Abstract:As the field of semiconductor nanolasers becomes mature in terms of both the miniaturization to the true sub-wavelength scale, and the realization of room temperature devices, the integrated treatment of multiple design aspects beyond pure electromagnetic consideration becomes necessary to further advance the field. In this review, we focus on one such design aspect: temperature effects in nanolasers. We summarize recent efforts in understanding the interplay of various temperaturedependent parameters, and study their effects on optical mode and emission characteristics. Building on this knowledge, nanolasers with improved thermal performance can be designed, and their performance evaluated. Although this review focuses on metal-clad semiconductor lasers because of their suitability for dense chip-scale integration, these thermal considerations also apply to the broader field of nanolasers.

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“…30 To exploit the properties of WGMs, a microdisk resonator with an underlying post using undercut etching method has been investigated in many previous studies. [15][16][17][18][19][20][21] However, the underlying post used for mechanical support may hamper the intrinsic field profile of WGMs and does not contribute to mode selection. 18 Another challenge of laser operation is to maintain single mode lasing for specific modes due to the high number of closely spaced WGMs.…”

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confidence: 99%

Self-suspended Single-mode Microdisk Lasers

Noh¹,

Dupré²,

Ndao³

et al. 2019

Conference on Lasers and Electro-Optics

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Miniature semiconductor lasers have attracted a large amount of interest owing to their potential as highly integrated components in photonic circuits or in sensors. Particularly, microdisk lasers exploiting whispering gallery modes have been regarded as an important candidate because of their relatively small footprint and low threshold. However, it has been challenging for microdisk to operate under single mode operation and to lase in a preselected mode. We report subwavelength microdisk resonators suspended in air with connecting bridges and propose a simple method using the number and symmetry of bridges to enhance or reduce wave confinement in the whispering gallery cavity. Moreover, a suitable choice of bridges increases the quality factor of microdisks compared to microdisks resonator without bridges. Using this method, we demonstrate single mode lasing of preselected modes at telecommunication wavelength.Over the past few years, small-scale lasers have attracted a widespread attention with potential applications in several areas including health, 1,2 defense, 3 and quality control, 4 to name a few.Recent advances made in photonics, both in understanding physical phenomena 5,6 and in controlling fabrication processes, 7,8 have contributed to improved lasers robustness 9 and size. 10,11

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Continuous-wave subwavelength microdisk lasers at λ = 153 µm

Cited by 23 publications

References 19 publications

Record performance of electrical injection sub-wavelength metallic-cavity semiconductor lasers at room temperature

Record performance of electrical injection sub-wavelength metallic-cavity semiconductor lasers at room temperature

Temperature effects in metal-clad semiconductor nanolasers

Self-suspended Single-mode Microdisk Lasers

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