All-optical wavelength shifting in a semiconductor laser using resonant nonlinearities

Madéo, Julien; Cavalié, P.; Freeman, Joshua R.; Jukam, Nathan; Maysonnave, Jean; Maussang, Kenneth; Beere, Harvey E.; Ritchie, D. A.; Sirtori, Carlo; Tignon, Jérôme; Dhillon, Sukhdeep

doi:10.1038/nphoton.2012.157

Nature Photon

2012

DOI: 10.1038/nphoton.2012.157

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All-optical wavelength shifting in a semiconductor laser using resonant nonlinearities

Julien Madéo

P. Cavalié

Joshua R. Freeman

et al.

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Cited by 24 publications

(40 citation statements)

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“…(1), we observe that the third order efficiency is proportional to 1/S 2 while for the second order process the efficiency is proportional to 1/S. 9 This difference in the efficiency explains why the 2nd order sideband is not as efficient in the single plasmon waveguide. Indeed, S 2 is $8.1 Â 10 7 lm 2 for a single plasmon waveguide and S 2 $ 0.14 Â 10 7 lm 2 for a double metal waveguide.…”

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confidence: 88%

“…Here, the pump energy is slightly larger than the effective bandgap (E NIR ¼ 1528.2 meV) such that the first order interaction is maximized. 9 The first and second order sidebands are exactly separated from the pump by E QCL and 2E QCL , respectively, and only appear when the QCL is operated above laser threshold. The second order sideband is considerably less intense than the first order sideband and required a longer integration time (90 s instead of 1.5 s) to obtain a good signal-to-noise ratio.…”

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confidence: 99%

“…9 It was shown that a nonlinear interaction between the THz beam of the QCL, E QCL , and a resonant near-infrared (NIR) excitation, E NIR , of the effective bandgap can occur. This results in the generation of first order THz optical sidebands at energies E NIR 6 E QCL .…”

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confidence: 99%

“…15 In this letter, we demonstrate the generation of higher order sidebands up to the 3rd order, i.e., E NIR 6 3E QCL . Compared to our previous demonstrations 9 with a bound-tocontinuum QCL in a single plasmon waveguide, here a longitudinal-optical (LO) depopulation based QCL with a double metal waveguide is used. As well as allowing high powers, 16 the THz field is confined into a smaller subwavelength volume and results in facet reflectivities approximately three times higher.…”

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confidence: 99%

“…The pump is transverse magnetic (TM) polarized for excitation of transitions from light holes. 9 (The pump detected on the CCD camera is a parasitic part of the NIR beam which is not coupled into the QCL waveguide.) Here, the pump energy is slightly larger than the effective bandgap (E NIR ¼ 1528.2 meV) such that the first order interaction is maximized.…”

mentioning

confidence: 99%

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High order sideband generation in terahertz quantum cascade lasers

Cavalié

Freeman

Maussang

et al. 2013

Applied Physics Letters

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We demonstrate the generation of high order terahertz (THz) frequency sidebands (up to 3rd order) on a near infrared (NIR) optical carrier within a THz quantum cascade laser (QCL). The NIR carrier is resonant with the interband transition of the quantum wells composing the QCL, allowing the nonlinearity to be enhanced and leading to frequency mixing. A phonon depopulation based QCL with a double metal cavity was used to enhance the intracavity power density and to demonstrate the higher order sidebands. The 1st order sideband intensity shows a linear dependence with THz power corresponding to a single THz photon, while the second order sideband has a quadratic dependence implying a two THz photon interaction and hence a third order susceptibility. These measurements are compared to the photoluminescence and the QCL bandstructure to identify the states involved, with the lowest conduction band states contributing the most to the sideband intensity. We also show that the interaction for the second order sideband corresponds to an enhanced direct third order susceptibility v (3) of $7 Â 10 À16 (m/V) 2 , two orders of magnitude greater than the bulk value. V C 2013 AIP Publishing LLC. [http://dx

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confidence: 88%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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High order sideband generation in terahertz quantum cascade lasers

Cavalié

Freeman

Maussang

et al. 2013

Applied Physics Letters

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Controlling the Output of Organic Micro/Nanolasers

Dong

Zhang

Zhao

2019

Advanced Optical Materials

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Organic micro/nanolasers hold a promising potential in advancing the fields of photonics and optoelectronics. Recently, great progress has been made in designing and controlling the output characteristics of organic micro/nanolasers, which significantly expands the capabilities and improves the performance of micro/nanolasers. In this Progress Report, the design philosophy, research progress, and further research directions in manipulating the output behaviors of organic micro/nanolasers are presented. A brief introduction to the fundamentals of the organic micro/nanolasers is given with an emphasis on the basic principle for laser output control. Various organic micro/nanolasers with desired output are discussed in detail, including wavelength tunable lasers, multiwavelength lasers, mode controllable lasers, and directional lasers. Special emphasis is put on gaining insight into the structure–property relationship in the controllable organic micro/nanolasers. Finally, future research directions and challenges toward more advanced control strategies of organic micro/nanolasers are provided to give an outlook on this emerging field.

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Synthesis and photovoltaic performances of benzo[1,2‐b:4,5‐b']dithiophene‐alt‐2,3‐diphenylquinoxaline copolymers pending functional groups in phenyl rings

Tan

Deng

et al. 2012

J. Polym. Sci. A Polym. Chem.

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Two donor/acceptor (D/A)-based benzo[1,2-b:4,5b 0 ]dithiophene-alt-2,3-biphenyl quinoxaline copolymers of P1 and P2 were synthesized pending different functional groups (thiophene or triphenylamine) in the 4-positions of phenyl rings. Their thermal, photophysical, electrochemical, and photovoltaic properties, as well as morphology of their blending films were investigated. The poly(4,8-bis((2-ethyl-hexyl)oxy)benzo[1,2-b:4,5-b'] dithiophene)-alt-(2,3-bis(4'-bis(N,N-bis(4-(octyloxy) phenylamino)-1,1'-biphen-4-yl)quinoxaline) (P2) exhibited better photovoltaic performance than poly(4,8-bis((2-ethylhexyl)oxy)benzo[1,2-b:4,5-b'] dithiophene)-alt-(2,3-bis(4-(5-octylthiophen-2-yl)phenyl)quinoxaline) (P1) in the bulk-heterojunction polymer solar cells with a configuration of ITO/PEDOT:PSS/polymers: [6,6]-phenyl-C 71 -butyric acid methyl ester (PC 71 BM)/LiF/Al. A power conversion efficiency of 3.43%, an open-circuit voltage of 0.80 V, and a short-circuit current of 9.20 mA cm À2 were achieved in the P2-based cell under the illumination of AM 1.5, 100 mW cm À2 . Importantly, this power conversion efficiency level is 2.29 times higher than that in the P1-based cell. Our work indicated that incorporating triphenylamine pendant in the D/A-based polymers can greatly improved the photovoltaic properties for its resulting polymers.V C 2012 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym.

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All-optical wavelength shifting in a semiconductor laser using resonant nonlinearities

Cited by 24 publications

References 31 publications

High order sideband generation in terahertz quantum cascade lasers

High order sideband generation in terahertz quantum cascade lasers

Controlling the Output of Organic Micro/Nanolasers

Synthesis and photovoltaic performances of benzo[1,2‐b:4,5‐b']dithiophene‐alt‐2,3‐diphenylquinoxaline copolymers pending functional groups in phenyl rings

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