Nanostructured diode for infrared photodetection through nondegenerate two-photon absorption

Baptiste Fix; Julien Jaeck; Benjamin Vest; Michaël Verdun; Grégoire Beaudoin; Isabelle Sagnes; Jean Luc Pelouard; Riad Haïdar

doi:10.1063/1.4996369

Nanostructured diode for infrared photodetection through nondegenerate two-photon absorption

Baptiste Fix, Julien Jaeck, Benjamin Vest, Michaël Verdun, Grégoire Beaudoin, Isabelle Sagnes, Jean Luc Pelouard, Riad Haïdar

Research output: Contribution to journal › Article › peer-review

Abstract

We investigate infrared detection at room temperature using non-degenerate two-photon absorption in a nanostructured indium phosphide photodiode. We designed the detector structure to achieve a good nonlinear absorption by combining three major ideas: first, we use the non-degenerate two-photon absorption process, which is known to be more efficient than the previously used degenerate two-photon absorption. Second, we ensured a correct spatial overlap of our pump field with our signal field. Third, we optimized the nanostructuration to increase the signal field amplitude locally within the active medium of the device. The resulting device consists of a PIN junction embedded between a back-reflecting gold mirror and a top grating. We experimentally characterized our diode with regard to reflectivity and two-photon absorption generated photocurrent for a continuous-wave pump and a nanosecond pulsed signal of around 3.39 μm. Owing to the nanostructuration, the generated photocurrent shows a gain of 24 with respect to the bulk response of InP.

Original language	English
Article number	041102
Journal	Applied Physics Letters
Volume	111
Issue number	4
DOIs	https://doi.org/10.1063/1.4996369
Publication status	Published - 24 Jul 2017
Externally published	Yes

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title = "Nanostructured diode for infrared photodetection through nondegenerate two-photon absorption",

abstract = "We investigate infrared detection at room temperature using non-degenerate two-photon absorption in a nanostructured indium phosphide photodiode. We designed the detector structure to achieve a good nonlinear absorption by combining three major ideas: first, we use the non-degenerate two-photon absorption process, which is known to be more efficient than the previously used degenerate two-photon absorption. Second, we ensured a correct spatial overlap of our pump field with our signal field. Third, we optimized the nanostructuration to increase the signal field amplitude locally within the active medium of the device. The resulting device consists of a PIN junction embedded between a back-reflecting gold mirror and a top grating. We experimentally characterized our diode with regard to reflectivity and two-photon absorption generated photocurrent for a continuous-wave pump and a nanosecond pulsed signal of around 3.39 μm. Owing to the nanostructuration, the generated photocurrent shows a gain of 24 with respect to the bulk response of InP.",

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doi = "10.1063/1.4996369",

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T1 - Nanostructured diode for infrared photodetection through nondegenerate two-photon absorption

AU - Fix, Baptiste

AU - Jaeck, Julien

AU - Vest, Benjamin

AU - Verdun, Michaël

AU - Beaudoin, Grégoire

AU - Sagnes, Isabelle

AU - Pelouard, Jean Luc

AU - Haïdar, Riad

PY - 2017/7/24

Y1 - 2017/7/24

N2 - We investigate infrared detection at room temperature using non-degenerate two-photon absorption in a nanostructured indium phosphide photodiode. We designed the detector structure to achieve a good nonlinear absorption by combining three major ideas: first, we use the non-degenerate two-photon absorption process, which is known to be more efficient than the previously used degenerate two-photon absorption. Second, we ensured a correct spatial overlap of our pump field with our signal field. Third, we optimized the nanostructuration to increase the signal field amplitude locally within the active medium of the device. The resulting device consists of a PIN junction embedded between a back-reflecting gold mirror and a top grating. We experimentally characterized our diode with regard to reflectivity and two-photon absorption generated photocurrent for a continuous-wave pump and a nanosecond pulsed signal of around 3.39 μm. Owing to the nanostructuration, the generated photocurrent shows a gain of 24 with respect to the bulk response of InP.

AB - We investigate infrared detection at room temperature using non-degenerate two-photon absorption in a nanostructured indium phosphide photodiode. We designed the detector structure to achieve a good nonlinear absorption by combining three major ideas: first, we use the non-degenerate two-photon absorption process, which is known to be more efficient than the previously used degenerate two-photon absorption. Second, we ensured a correct spatial overlap of our pump field with our signal field. Third, we optimized the nanostructuration to increase the signal field amplitude locally within the active medium of the device. The resulting device consists of a PIN junction embedded between a back-reflecting gold mirror and a top grating. We experimentally characterized our diode with regard to reflectivity and two-photon absorption generated photocurrent for a continuous-wave pump and a nanosecond pulsed signal of around 3.39 μm. Owing to the nanostructuration, the generated photocurrent shows a gain of 24 with respect to the bulk response of InP.

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DO - 10.1063/1.4996369

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VL - 111

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 4

M1 - 041102

ER -

Nanostructured diode for infrared photodetection through nondegenerate two-photon absorption

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