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Quantum dot lasing from a waterproof and stretchable polymer film

Mohammad Mohammadimasoudi (UGent) , Pieter Geiregat (UGent) , Frederik Van Acker (UGent) , Jeroen Beeckman (UGent) , Zeger Hens (UGent) , Tangi Aubert (UGent) and Kristiaan Neyts (UGent)
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Abstract
Colloidal quantum dots (QDs) are excellent optical gain materials that combine high material gain, a strong absorption of pump light, stability under strong light exposure and a suitability for solution-based processing. The integration of QDs in laser cavities that fully exploit the potential of these emerging optical materials remains, however, a challenge. In this work, we report on a vertical cavity surface emitting laser, which consists of a thin film of QDs embedded between two layers of polymerized chiral liquid crystal. Forward directed, circularly polarized defect mode lasing under nanosecond-pulsed excitation is demonstrated within the photonic band gap of the chiral liquid crystal. Stable and long-term narrow-linewidth lasing of an exfoliated free-standing, flexible film under water is obtained at room temperature. Moreover, we show that the lasing wavelength of this flexible cavity shifts under influence of pressure, strain or temperature. As such, the combination of solution processable and stable inorganic QDs with high chiral liquid crystal reflectivity and effective polymer encapsulation leads to a flexible device with long operational lifetime, that can be immersed in different protic solvents to act as a sensor.
Keywords
Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, FLASH SYNTHESIS, LASERS

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MLA
Mohammadimasoudi, Mohammad, et al. “Quantum Dot Lasing from a Waterproof and Stretchable Polymer Film.” LIGHT-SCIENCE & APPLICATIONS, vol. 11, no. 1, 2022, doi:10.1038/s41377-022-00960-z.
APA
Mohammadimasoudi, M., Geiregat, P., Van Acker, F., Beeckman, J., Hens, Z., Aubert, T., & Neyts, K. (2022). Quantum dot lasing from a waterproof and stretchable polymer film. LIGHT-SCIENCE & APPLICATIONS, 11(1). https://doi.org/10.1038/s41377-022-00960-z
Chicago author-date
Mohammadimasoudi, Mohammad, Pieter Geiregat, Frederik Van Acker, Jeroen Beeckman, Zeger Hens, Tangi Aubert, and Kristiaan Neyts. 2022. “Quantum Dot Lasing from a Waterproof and Stretchable Polymer Film.” LIGHT-SCIENCE & APPLICATIONS 11 (1). https://doi.org/10.1038/s41377-022-00960-z.
Chicago author-date (all authors)
Mohammadimasoudi, Mohammad, Pieter Geiregat, Frederik Van Acker, Jeroen Beeckman, Zeger Hens, Tangi Aubert, and Kristiaan Neyts. 2022. “Quantum Dot Lasing from a Waterproof and Stretchable Polymer Film.” LIGHT-SCIENCE & APPLICATIONS 11 (1). doi:10.1038/s41377-022-00960-z.
Vancouver
1.
Mohammadimasoudi M, Geiregat P, Van Acker F, Beeckman J, Hens Z, Aubert T, et al. Quantum dot lasing from a waterproof and stretchable polymer film. LIGHT-SCIENCE & APPLICATIONS. 2022;11(1).
IEEE
[1]
M. Mohammadimasoudi et al., “Quantum dot lasing from a waterproof and stretchable polymer film,” LIGHT-SCIENCE & APPLICATIONS, vol. 11, no. 1, 2022.
@article{8766689,
  abstract     = {{Colloidal quantum dots (QDs) are excellent optical gain materials that combine high material gain, a strong absorption of pump light, stability under strong light exposure and a suitability for solution-based processing. The integration of QDs in laser cavities that fully exploit the potential of these emerging optical materials remains, however, a challenge. In this work, we report on a vertical cavity surface emitting laser, which consists of a thin film of QDs embedded between two layers of polymerized chiral liquid crystal. Forward directed, circularly polarized defect mode lasing under nanosecond-pulsed excitation is demonstrated within the photonic band gap of the chiral liquid crystal. Stable and long-term narrow-linewidth lasing of an exfoliated free-standing, flexible film under water is obtained at room temperature. Moreover, we show that the lasing wavelength of this flexible cavity shifts under influence of pressure, strain or temperature. As such, the combination of solution processable and stable inorganic QDs with high chiral liquid crystal reflectivity and effective polymer encapsulation leads to a flexible device with long operational lifetime, that can be immersed in different protic solvents to act as a sensor.}},
  articleno    = {{275}},
  author       = {{Mohammadimasoudi, Mohammad and Geiregat, Pieter and Van Acker, Frederik and Beeckman, Jeroen and Hens, Zeger and Aubert, Tangi and Neyts, Kristiaan}},
  issn         = {{2095-5545}},
  journal      = {{LIGHT-SCIENCE & APPLICATIONS}},
  keywords     = {{Atomic and Molecular Physics,and Optics,Electronic,Optical and Magnetic Materials,FLASH SYNTHESIS,LASERS}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{9}},
  title        = {{Quantum dot lasing from a waterproof and stretchable polymer film}},
  url          = {{http://doi.org/10.1038/s41377-022-00960-z}},
  volume       = {{11}},
  year         = {{2022}},
}

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