中国激光, 2019, 46 (6): 0614012, 网络出版: 2019-06-14
基于有机光电材料的太赫兹波调制器件研究进展 
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Recent Progress of Terahertz Wave Modulator Based on Organic Photoelectric Materials
图 & 表
图 1. 不同条件下的太赫兹波透射光谱[18]。(a)无激光激发;(b)激光激发
Fig. 1. THz wave transmission spectra under different conditions[18]. (a) Without laser excitation; (b) with laser excitation
图 2. 有机材料/硅双层结构的高效太赫兹波调制器[20]。(a)光激励作用下被测样品的太赫兹波透射测量示意图;(b) 785 nm光激发下电荷转移过程的能级图;(c)不同条件下的太赫兹波透射光谱
Fig. 2. Highly efficient THz wave modulators with organic materials/silicon bilayer structure[20]. (a) Schematic of THz wave transmission measurement of sample under photo-excitation; (b) energy-level diagrams for charge transfer processes under photo-excitation at 785 nm; (c) THz wave transmission spectra under different conditions
图 3. SRRs的太赫兹波透射特性[21]。(a)在CuPc/Si薄膜上制备的金属SRR的显微镜图像;不同激光强度下(b) CuPc/Si薄膜和(c)硅片上制备的金属SRR的太赫兹波透射光谱
Fig. 3. THz wave transmission characteristics of SRRs[21]. (a) Microscope image of fabricated metal SRR on CuPc/Si film; THz wave transmission spectra of fabricated metal SRR on (b) CuPc/Si film and (c) bare Si substrate under different laser intensities
图 4. 硅基AlClPc、CuPc及SnCl2Pc的太赫兹光调制特性[22]。(a)调制因子对比;(b)~(d)光调制光谱
Fig. 4. THz optical modulation characteristics of silicon-based AlClPc, CuPc, and SnCl2Pc[22]. (a) Contrast of modulation factors; (b)-(d) optical modulation spectra
图 5. 硅基MEH-PPV的太赫兹光调制特性[23]。(a)THz-CW光调制测试系统;MEH-PPV/Si结构的器件在(b)无光照及(c)有光照作用下的太赫兹波透射强度;Si结构的器件在(d)无光照及(e)有光照作用下的太赫兹波透射强度;(f)不同结构的器件的太赫兹波透过强度和调制因子
Fig. 5. THz optical modulation characteristics of silicon-based MEH-PPV[23]. (a) Optical modulation test system for THz-CW; THz wave transmission intensities of devices based on MEH-PPV/Si structure (b) without illumination and (c) with illumination; THz wave transmission intensities of devices based on Si structure (d) without illumination and (e) with illumination; (f) THz wave transmission intensities and modulation factors of devices with different structures
图 6. 基于有机材料的太赫兹波调制器的太赫兹无线通信系统[30]。(a) “THz”的发送;(b) “THz”的接收
Fig. 6. THz wireless communication system based on organic-material THz wave modulator[30]. (a) Transmission of "THz"; (b) reception of "THz"
图 7. 硅基DAST的太赫兹光调制特性[32]。(a)基于回波振荡器(BWO)太赫兹源的实验装置图;(b) DAST-Si异质结样品的光调制速率
Fig. 7. THz optical modulation characteristics of silicon-based DAST[32]. (a) Schematic of experimental configuration based on backward-wave oscillator (BWO) THz source; (b) optical modulation rate of DAST-Si heterojunction sample
图 8. 硅基PVA的太赫兹光调制特性[33]。不同强度光激发作用下, (a)纯硅样品,(b)未经激光加热处理的PVA/Si及(c) LP-PVA/Si样品的太赫兹波透射光谱;(d)纯硅样品、未经激光加热处理的PVA/Si样品和LP-PVA/Si样品的太赫兹波调制深度与抽运光功率密度的关系
Fig. 8. THz optical modulation characteristics of silicon-based PVA[33]. THz wave transmission spectra of (a) bare Si, (b) PVA/Si without laser heating, and (c) LP-PVA/Si samples under photo-excitation at different intensities of pumping laser; (d) THz wave modulation depth as a function of power density of pumping laser from bare Si, PVA/Si without laser heating, and LP-PVA/Si samples
图 9. 硅基CH3NH3PbI3的太赫兹光调制特性[37]。(a)太赫兹波透射光谱随着激光功率密度的变化; (b)太赫兹波透射强度随激光功率密度的变化
Fig. 9. THz optical modulation characteristics of silicon-based CH3NH3PbI337. (a) THz wave transmission spectrum versus laser power density; (b) THz wave transmission intensity versus laser power density
图 10. 空间光调制图样[37]。(a)纯硅太赫兹调制器的空间光调制图样;(b)硅基CH3NH3PbI3太赫兹调制器的空间光调制图样
Fig. 10. Spatially optical modulation pattern[37]. (a) Spatially optical modulation pattern based on bare-Si THz wave modulator; (b) spatially optical modulation pattern based on CH3NH3PbI3/Si THz wave modulator
图 11. Fano共振器件的超快调制[40]。(a) Fano共振结构的电场分布及表面电流分布分析;(b) 超薄柔性超材料结构图和OPTP测量系统的示意图
Fig. 11. Ultrafast modulation of Fano resonators[40]. (a) Analysis of electric field distribution and surface current distribution in Fano resonant structure; (b) structural diagram of ultrathin flexible metamaterial and schematic of OPTP measurement system
图 12. 有机太赫兹电调制[43]。(a)有机太赫兹电调制器器件结构图;(b)太赫兹波透射光谱随外置偏压的变化
Fig. 12. Organic THz electrical modulation[43]. (a) Structure diagram of organic THz electrical modulation device; (b) THz wave transmission spectrum versus external bias voltage
图 13. 不同光激发作用下不同结构的电调制太赫兹波的透射强度[45]。(a) MEH-PPV/PEDOT∶PSS∶DMSO/Si/PEDOT∶ PSS∶DMSO结构;(b) PEDOT∶PSS∶DMSO/Si/PEDOT∶PSS∶DMSO结构;(c) MEH-PPV/Si/PEDOT∶PSS∶DMSO结构
Fig. 13. Transmitted intensity of electrically modulated THz waves with different structures under different photoexcitation[45]. (a) Structure of MEH-PPV/PEDOT∶PSS∶DMSO/Si/PEDOT∶PSS∶DMSO; (b) structure of EDOT∶PSS∶DMSO/Si/PEDOT∶PSS∶DMSO; (c) structure of MEH-PPV/Si/PEDOT∶PSS∶DMSO
张波, 和挺, 钟良, 汪国崔, 王维, 沈京玲. 基于有机光电材料的太赫兹波调制器件研究进展[J]. 中国激光, 2019, 46(6): 0614012. Bo Zhang, Ting He, Liang Zhong, Guocui Wang, Wei Wang, Jingling Shen. Recent Progress of Terahertz Wave Modulator Based on Organic Photoelectric Materials[J]. Chinese Journal of Lasers, 2019, 46(6): 0614012.
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