Performance optimization of InSb infrared focal-plane arrays with diffractive microlenses

J. Bai; W. Hu; N. Guo; Wen Lei; Y. Lv; X. Zhang; J. Si; X. Chen; W. Lü

doi:10.1007/s11664-014-3054-0

Performance optimization of InSb infrared focal-plane arrays with diffractive microlenses

J. Bai, W. Hu, N. Guo, Wen Lei, Y. Lv, X. Zhang, J. Si, X. Chen, W. Lü

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

34 Citations (Scopus)

Abstract

In this paper, diffractive microlens arrays are studied to concentrate incident light onto the effective photosensitive area of InSb infrared focal-plane arrays and thus enhance the quantum efficiency and reduce the crosstalk. Four designs of diffractive microlenses are investigated by a phase-matched Fresnel-elements approach. The quantum efficiency and crosstalk of the devices are calculated by using a two-dimensional device simulation with unit cell of 50 μm. Light propagation through the diffractive microlenses is simulated by the finite-difference time-domain method based on a rigorous vector solution of Maxwell's equations. The results show that the highest quantum efficiency of the device with a diffractive microlens array is about 51.6% and the corresponding crosstalk is 5.06%. The quantum efficiency is 2.1% higher than that of the device with a spherical refractive microlens array. © 2014 TMS.

Original language	English
Pages (from-to)	2795-2801
Journal	Journal of Electronic Materials
Volume	43
Issue number	8
DOIs	https://doi.org/10.1007/s11664-014-3054-0
Publication status	Published - 2014

Access to Document

10.1007/s11664-014-3054-0

Cite this

@article{bfc68dfad207416aa2aa874f49c73c5a,

title = "Performance optimization of InSb infrared focal-plane arrays with diffractive microlenses",

abstract = "In this paper, diffractive microlens arrays are studied to concentrate incident light onto the effective photosensitive area of InSb infrared focal-plane arrays and thus enhance the quantum efficiency and reduce the crosstalk. Four designs of diffractive microlenses are investigated by a phase-matched Fresnel-elements approach. The quantum efficiency and crosstalk of the devices are calculated by using a two-dimensional device simulation with unit cell of 50 μm. Light propagation through the diffractive microlenses is simulated by the finite-difference time-domain method based on a rigorous vector solution of Maxwell's equations. The results show that the highest quantum efficiency of the device with a diffractive microlens array is about 51.6% and the corresponding crosstalk is 5.06%. The quantum efficiency is 2.1% higher than that of the device with a spherical refractive microlens array. {\textcopyright} 2014 TMS.",

author = "J. Bai and W. Hu and N. Guo and Wen Lei and Y. Lv and X. Zhang and J. Si and X. Chen and W. L{\"u}",

year = "2014",

doi = "10.1007/s11664-014-3054-0",

language = "English",

volume = "43",

pages = "2795--2801",

journal = "Journal of Electronic Materials",

issn = "0361-5235",

publisher = "Springer",

number = "8",

}

TY - JOUR

T1 - Performance optimization of InSb infrared focal-plane arrays with diffractive microlenses

AU - Bai, J.

AU - Hu, W.

AU - Guo, N.

AU - Lei, Wen

AU - Lv, Y.

AU - Zhang, X.

AU - Si, J.

AU - Chen, X.

AU - Lü, W.

PY - 2014

Y1 - 2014

N2 - In this paper, diffractive microlens arrays are studied to concentrate incident light onto the effective photosensitive area of InSb infrared focal-plane arrays and thus enhance the quantum efficiency and reduce the crosstalk. Four designs of diffractive microlenses are investigated by a phase-matched Fresnel-elements approach. The quantum efficiency and crosstalk of the devices are calculated by using a two-dimensional device simulation with unit cell of 50 μm. Light propagation through the diffractive microlenses is simulated by the finite-difference time-domain method based on a rigorous vector solution of Maxwell's equations. The results show that the highest quantum efficiency of the device with a diffractive microlens array is about 51.6% and the corresponding crosstalk is 5.06%. The quantum efficiency is 2.1% higher than that of the device with a spherical refractive microlens array. © 2014 TMS.

AB - In this paper, diffractive microlens arrays are studied to concentrate incident light onto the effective photosensitive area of InSb infrared focal-plane arrays and thus enhance the quantum efficiency and reduce the crosstalk. Four designs of diffractive microlenses are investigated by a phase-matched Fresnel-elements approach. The quantum efficiency and crosstalk of the devices are calculated by using a two-dimensional device simulation with unit cell of 50 μm. Light propagation through the diffractive microlenses is simulated by the finite-difference time-domain method based on a rigorous vector solution of Maxwell's equations. The results show that the highest quantum efficiency of the device with a diffractive microlens array is about 51.6% and the corresponding crosstalk is 5.06%. The quantum efficiency is 2.1% higher than that of the device with a spherical refractive microlens array. © 2014 TMS.

U2 - 10.1007/s11664-014-3054-0

DO - 10.1007/s11664-014-3054-0

M3 - Article

SN - 0361-5235

VL - 43

SP - 2795

EP - 2801

JO - Journal of Electronic Materials

JF - Journal of Electronic Materials

IS - 8

ER -

Performance optimization of InSb infrared focal-plane arrays with diffractive microlenses

Abstract

Access to Document

Fingerprint

Cite this