Flexible compact microdisk lasers on a polydimethylsiloxane (PDMS) substrate

Shih, Min‐Hsiung; Hsu, Kung-Shu; Wang, Y. C.; Yang, Yi‐Chun; Tsai, S. K.; Liu, Y. C.; Chang, Z. C.; Wu, Meng‐Chyi

doi:10.1364/oe.17.000991

Cited by 14 publications

(3 citation statements)

References 28 publications

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“…Thanks to the development of electrochemical etching [21] and photoelectrochemical etching [22], ultra-thin GaN film has been demonstrated using chemical exfoliation in previous works [23][24][25], which makes gallium nitride microtube lasers possible. Previous studies of WGM lasers employed microdisks or microfiber embedded in a flexible substrate [26][27][28][29][30] as strain sensors. For example, a GaN microdisk laser with a diameter of 1.2 µm embedded in a polydimethylsiloxane (PDMS) substrate as a strain sensor has a blue-shift per stretching unit of about 4.0 nm [29].…”

Section: Introductionmentioning

confidence: 99%

Low-Threshold and Wavelength-Tunable InGaN Tubular WGM Laser Embedded in a Flexible Substrate

Zhang

et al. 2021

Crystals

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We have fabricated a tubular whispering gallery mode laser based on InGaN/GaN quantum wells and transferred it onto a flexible substrate. Compared with those without the transferring processes, the threshold energy density was reduced by 60%, at about 25.55 µJ/cm2, while a high-quality factor of >15,000 was obtained. Finite-difference time-domain simulation demonstrated that such a low threshold energy density can be attributed to the decreased mode volume, from 1.32 × 10−3 μm3 to 6.92 × 10−4 μm3. The wavelength dependences on strain were found to be 5.83 nm, 1.38 nm, and 2.39 nm per stretching unit ε in the X, Y, and Z directions, respectively. Such strain sensitivity was attributed to the deformation of the GaN microtube and the change in the refractive index of the PDMS.

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Section: Introductionmentioning

confidence: 99%

Low-Threshold and Wavelength-Tunable InGaN Tubular WGM Laser Embedded in a Flexible Substrate

Zhang

et al. 2021

Crystals

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“…Therefore, polymer or organic photonic devices are commonly used because of their flexible applications and low cost. Recent studies have reported on III-V materials-based light emitting diodes [22], [23] and compact lasers [24]- [26] on flexible and stretchable polymer/organic substrates. Because the optical properties of compact lasers are sensitive to its geometry, this organic or polymer-semiconductor hybrid platform allows fine-tuning of optical properties for small devices.…”

Section: Introductionmentioning

confidence: 99%

Wavelength Tuning by Bending a Flexible Photonic Crystal Laser

Hsu

Chiu

Lee

et al. 2013

J. Lightwave Technol.

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This study demonstrated mechanical wavelength finetuning of a flexible photonic crystal (PhC) laser. A triangular PhC structure was fabricated in an InGaAsP layer on top of a polydimethylsiloxane substrate. Experiments showed two lasing modes at symmetry points K and M in the first PhC band. The laser structure was bent along the direction and the lasing wavelength was fine-tuned by varying the bending radius. The lasing wavelength shift is attributed to PhC lattice distortion and its tuning behavior corresponds with the simulation results. This ultra-small, wavelength-tunable laser could function as a unique light source for integrated optoelectronic circuits.

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“…12,13 Besides the emission at the near-infrared or midinfrared regimes, the light sources with type-II QDs might also have advantages in photon stability, thermal stability, and an extra parameter to fine tune wavelength. 8 These advantages will benefit many applications such as optical integrated circuits, flexible optoelectronics, 14 or bioimage. 15 In this study, we demonstrated a compact microdisk cavity laser 16 made of type-II GaSb/GaAs QDs on GaAs substrate.…”

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confidence: 99%

Compact microdisk cavity laser with type-II GaSb/GaAs quantum dots

Hsu

Chiu

Lin

et al. 2011

Applied Physics Letters

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Microdisk lasers with active region made of type-II GaSb/GaAs quantum dots on the GaAs substrate have been demonstrated. A microdisk cavity with diameter of 3.9 m was fabricated from a 225-nm-thick GaAs layer filled with GaSb quantum dots. Lasing at wavelengths near 1000 nm at 150 K was achieved for this microdisk. A high threshold characteristic temperature of 77 K was also observed. It is found that the lasing wavelength matches closely with the first-order whispering-gallery mode of the cavity as obtained from the finite-element method simulation.

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Flexible compact microdisk lasers on a polydimethylsiloxane (PDMS) substrate

Cited by 14 publications

References 28 publications

Low-Threshold and Wavelength-Tunable InGaN Tubular WGM Laser Embedded in a Flexible Substrate

Low-Threshold and Wavelength-Tunable InGaN Tubular WGM Laser Embedded in a Flexible Substrate

Wavelength Tuning by Bending a Flexible Photonic Crystal Laser

Compact microdisk cavity laser with type-II GaSb/GaAs quantum dots

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