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Detailed analyses and the correlations of coherent perfect absorption (CPA) in single-channel and two-channel structures are performed by the transfer matrix and scattering matrix method. The results show that there are many possibilities for single-channel and two-channel structures to satisfy the occurring of CPA. Moreover, with the same incident wavelength and refractive index of dielectric, the length of dielectric for two-channel CPA is twice that for single-channel. For instance, it is 3.701 m/7.402 m for single-/two-channel CPA as 756 nm wavelength is incident on Si material. Our results facilitate the application of CPA in optical modulator, switches, detector, etc., and they are also of significance for Si-based integration of optical circuits in optical communication and computer.
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Keywords:
- coherent perfect absorption /
- single-channel /
- two-channel /
- length of dielectric
[1] Chong Y D, Ge L, Cao H, Stone A D 2010 Phys. Rev. Lett. 105 053901
[2] Wan W, Chong Y, Ge L, Noh H, Stone A D, Cao H 2011 Science 331 889
[3] Shen Y, Fan D H, Fu J W, Yu G P 2011 Acta Phys. Sin. 60 117302 (in Chinese) [沈云, 范定寰, 傅继武, 于国萍 2011 60 117302]
[4] Shen Y, Yu G P, Wang G P 2011 Appl. Phys. Lett. 99 221926
[5] Siegman A E 1989 Phys. Rev. A 39 1253
[6] Hamel W A, Woerdman J P 1989 Phys. Rev. A 40 2785
[7] Yan R H, Simes R J, Coldren L A 1989 IEEE Photon. Technol. Lett. 1 273
[8] Law K K, Yan R H, Merz J L, Coldren L A 1990 Appl. Phys. Lett. 56 1886
[9] Law K K, Yan R H, Coldren L A, Merz J L 1990 Appl. Phys. Lett. 57 1345
[10] Heffernan J F, Moloney M H, Hegarty J, Roberts J S, Whitehead M 1991 Appl. Phys. Lett. 58 2877
[11] Kishino K, Ünlü M S, Chyi J I, Reed J, Arsenault L, Morkoc H 1991 IEEE J. Quantum Electron. 27 2025
[12] Ünlü M S, Kishino K, Liaw H J, Morkoc H 1992 J. Appl. Phys. 71 4049
[13] Wang H, Li Y P 2001 Acta Phys. Sin. 50 2172 (in Chinese) [王辉, 李永平 2001 50 2172]
[14] Palik E D 1985 Handbook of Optical Constants of Solids (London: Academic Press)
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[1] Chong Y D, Ge L, Cao H, Stone A D 2010 Phys. Rev. Lett. 105 053901
[2] Wan W, Chong Y, Ge L, Noh H, Stone A D, Cao H 2011 Science 331 889
[3] Shen Y, Fan D H, Fu J W, Yu G P 2011 Acta Phys. Sin. 60 117302 (in Chinese) [沈云, 范定寰, 傅继武, 于国萍 2011 60 117302]
[4] Shen Y, Yu G P, Wang G P 2011 Appl. Phys. Lett. 99 221926
[5] Siegman A E 1989 Phys. Rev. A 39 1253
[6] Hamel W A, Woerdman J P 1989 Phys. Rev. A 40 2785
[7] Yan R H, Simes R J, Coldren L A 1989 IEEE Photon. Technol. Lett. 1 273
[8] Law K K, Yan R H, Merz J L, Coldren L A 1990 Appl. Phys. Lett. 56 1886
[9] Law K K, Yan R H, Coldren L A, Merz J L 1990 Appl. Phys. Lett. 57 1345
[10] Heffernan J F, Moloney M H, Hegarty J, Roberts J S, Whitehead M 1991 Appl. Phys. Lett. 58 2877
[11] Kishino K, Ünlü M S, Chyi J I, Reed J, Arsenault L, Morkoc H 1991 IEEE J. Quantum Electron. 27 2025
[12] Ünlü M S, Kishino K, Liaw H J, Morkoc H 1992 J. Appl. Phys. 71 4049
[13] Wang H, Li Y P 2001 Acta Phys. Sin. 50 2172 (in Chinese) [王辉, 李永平 2001 50 2172]
[14] Palik E D 1985 Handbook of Optical Constants of Solids (London: Academic Press)
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