太赫兹量子阱光电探测器光栅耦合的模拟与优化

张戎; 郭旭光; 曹俊诚

doi:10.7498/aps.60.050705

摘要

光栅耦合是量子阱光电探测器探测正入射电磁辐射的常用耦合方法,本文采用模式展开法研究了一维金属光栅太赫兹量子阱光电探测器中的电磁场分布,并给出了器件有源区中的平均光强.研究结果表明,若一维光栅的周期与太赫兹波在器件材料中的波长相当,并且根据器件结构选取合理的光栅占空比,可使器件中的平均光场最强,光栅的光耦合效率最高,从而提高器件的响应率.

关键词:

The grating optical coupling method is commonly used for detecting the normal incident light with a quantum well photodetector. In this paper, the distribution of electromagnetic field in one-dimensional metal grating terahertz quantum well photodetectors is studied with modal method, and the average light intensity in the active region is obtained. The result shows that, the light intensity in the device can be optimized when the period of the grating is comparable with the wavelength of the terahertz wave in the sample and a proper filling factor is chosen according to the device structure, which will improve the responsivity of the device.

Keywords:

作者及机构信息

1.
中国科学院太赫兹固态技术重点实验室,中国科学院上海微系统与信息技术研究所,上海 200050

基金项目: 国家重点基础研究发展计划(973计划)(批准号: 2007CB310402),国家自然科学基金(批准号: 60721004),中国科学院重大基金(批准号: KGCX1-YW-24, KGCX2-YW-231),中国科学院百人计划以及上海市基础研究重点基金资助项目(批准号: 10JC1417000)资助的课题.

Authors and contacts

1.
Key Laboratory of Terahertz Solid-State Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China

参考文献

[1]	Siegel P H 2002 IEEE Trans Microwave Theory Tech. 50 910
[2]	Ferguson B, Zhang X C 2003 Physics 32 286 (in Chinese)
[3]	Cao J C 2006 Physics 35 632 (in Chinese) [曹俊诚 2006 物理 35 632]
[4]	Tonouchi M 2007 Nat. Photonics 1 97
[5]	Köhler R, Tredicucci A, Beltram F, Beere H E, Linfield E H, Davies A G, Ritchie D A, Iotti R C, Rossi F 2002 Nature 417 156
[6]	Williams B S 2007 Nat. Photonics 1 517
[7]	Cao J C, Li H, Han Y J, Tan Z Y, Lue J T, Luo H, Laframboise S, Liu H C 2008 Chin. Phys. Lett. 25 953
[8]	Li H, Cao J C, Han Y J, Guo X G, Tan Z Y, Lue J T, Luo H, Laframboise S R, Liu H C 2008 J. Appl. Phys. 104 043101
[9]	Li H, Han Y J, Tan Z Y, Zhang R, Cao J C 2010 Acta Phys. Sin. 59 2169 (in Chinese)[黎华、韩英军、谭智勇、张戎、曹俊诚 2010 59 2169]
[10]	Liu H C, Song C Y, SpringThorpe A J, Cao J C 2004 Appl. Phys. Lett. 84 4068
[11]	Luo H, Liu H C, Song C Y, Wasilewski Z R 2005 Appl. Phys. Lett. 86 231103
[12]	Graf M, Scalari G, Hofstetter D, Faist J, Beere H, Linfield E, Ritchie D, Davies G 2004 Appl. Phys. Lett. 84 475
[13]	Guo X G, Tan Z Y, Cao J C, Liu H C 2009 Appl. Phys. Lett. 94 201101
[14]	Tan Z Y, Cao J C, Guo X G, Han Y J, Li H 2010 Acta Phys. Sin. 59 2391 (in Chinese)[谭智勇、曹俊诚、郭旭光、韩英军、黎华 2010 59 2391]
[15]	Schneider H, Liu H C 2006 Quantum Well Infrared Photodetectors: Physics and Applications (Berlin: Springer-Verlag) p97
[16]	Heitmann D, Kotthaus J P, Mohr E G 1982 Solid State Commun. 44 715
[17]	Gunapala S D, Bandara S V, Liu J K, Hill C J, Rafol S B, Mumolo J M, Trinh J T, Tidrow M Z, Levan P D 2005 Proc. SPIE 5783 789
[18]	Patrashin M, Hosako I 2008 Opt. Lett. 33 168
[19]	Todorov Y, Minot C 2007 J. Opt. Soc. Am. A 24 3100
[20]	Liu H C, Luo H, Song C Y, Wasilewski Z R, SpringThorpe A J, Cao J C 2008 IEEE J. Sel. Top. Quant. 14 374
[21]	Blakemore J S 1982 J. Appl. Phys. 53 R123

施引文献

[1]	Siegel P H 2002 IEEE Trans Microwave Theory Tech. 50 910
[2]	Ferguson B, Zhang X C 2003 Physics 32 286 (in Chinese)
[3]	Cao J C 2006 Physics 35 632 (in Chinese) [曹俊诚 2006 物理 35 632]
[4]	Tonouchi M 2007 Nat. Photonics 1 97
[5]	Köhler R, Tredicucci A, Beltram F, Beere H E, Linfield E H, Davies A G, Ritchie D A, Iotti R C, Rossi F 2002 Nature 417 156
[6]	Williams B S 2007 Nat. Photonics 1 517
[7]	Cao J C, Li H, Han Y J, Tan Z Y, Lue J T, Luo H, Laframboise S, Liu H C 2008 Chin. Phys. Lett. 25 953
[8]	Li H, Cao J C, Han Y J, Guo X G, Tan Z Y, Lue J T, Luo H, Laframboise S R, Liu H C 2008 J. Appl. Phys. 104 043101
[9]	Li H, Han Y J, Tan Z Y, Zhang R, Cao J C 2010 Acta Phys. Sin. 59 2169 (in Chinese)[黎华、韩英军、谭智勇、张戎、曹俊诚 2010 59 2169]
[10]	Liu H C, Song C Y, SpringThorpe A J, Cao J C 2004 Appl. Phys. Lett. 84 4068
[11]	Luo H, Liu H C, Song C Y, Wasilewski Z R 2005 Appl. Phys. Lett. 86 231103
[12]	Graf M, Scalari G, Hofstetter D, Faist J, Beere H, Linfield E, Ritchie D, Davies G 2004 Appl. Phys. Lett. 84 475
[13]	Guo X G, Tan Z Y, Cao J C, Liu H C 2009 Appl. Phys. Lett. 94 201101
[14]	Tan Z Y, Cao J C, Guo X G, Han Y J, Li H 2010 Acta Phys. Sin. 59 2391 (in Chinese)[谭智勇、曹俊诚、郭旭光、韩英军、黎华 2010 59 2391]
[15]	Schneider H, Liu H C 2006 Quantum Well Infrared Photodetectors: Physics and Applications (Berlin: Springer-Verlag) p97
[16]	Heitmann D, Kotthaus J P, Mohr E G 1982 Solid State Commun. 44 715
[17]	Gunapala S D, Bandara S V, Liu J K, Hill C J, Rafol S B, Mumolo J M, Trinh J T, Tidrow M Z, Levan P D 2005 Proc. SPIE 5783 789
[18]	Patrashin M, Hosako I 2008 Opt. Lett. 33 168
[19]	Todorov Y, Minot C 2007 J. Opt. Soc. Am. A 24 3100
[20]	Liu H C, Luo H, Song C Y, Wasilewski Z R, SpringThorpe A J, Cao J C 2008 IEEE J. Sel. Top. Quant. 14 374
[21]	Blakemore J S 1982 J. Appl. Phys. 53 R123

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