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Journals >Optical Instruments >Volume 41 >Issue 6 >Page 54 > Article

Optical Instruments
Vol. 41, Issue 6, 54 (2019)

Terahertz broadband achromatic deflector design

Dong YU and Qingqing CHENG^*

Author Affiliations

School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

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DOI: 10.3969/j.issn.1005-5630.2019.06.009 Cite this Article

Dong YU, Qingqing CHENG. Terahertz broadband achromatic deflector design[J]. Optical Instruments, 2019, 41(6): 54 Copy Citation Text

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Schematic illustration of the achromatic deflector

Fig. 1. Schematic illustration of the achromatic deflector

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Phase distribution and conversion efficiency of typical structures

Fig. 2. Phase distribution and conversion efficiency of typical structures

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Fig. 3. Comparison of achromatic and aberration deflection effects

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Fig. 4. Scattered-field intensities versus the frequency and the detecting angle

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编号	宽度/μm	长度/μm	相位补偿/（°）		编号	宽度/μm	长度/μm	相位补偿/（°）
1	5	40	620		20	39.5	50	980
2	9	39	640		21	41	50	1 000
3	13	39	660		22	41	50	1 020
4	17	38	680		23	40	50	1 040
5	20	39	700		24	39	50	1 060
6	22	40	720		25	38	49	1 080
7	24	41	740		26	35.5	49	1 100
8	26	41	760		27	34	50	1 120
9	28	41.5	780		28	33	49.5	1 140
10	30	41.5	800		29	32	49	1 160
11	32	41.5	820		30	34	43.5	1 180
12	34	41	820		31	29	45	1 200
13	34	44	840		32	29	39.5	1 220
14	36	44	860		33	24.5	44	1 240
15	36	45.5	880		34	23	44	1 260
16	36	47	900		36	21	44	1 280
17	36	49	920		36	20	41	1 300
18	36	50.5	940		37	20	37	1 320
19	38	50.5	960

Table 1. Parameters and compensation phase of structural units

位置/mm	−1.5	−1.44	−1.38	−1.32	−1.26	−1.2	−1.14	−1.08	−1.02	−0.96	−0.9
编号	37	37	36	35	35	34	33	32	32	31	30
旋转角度/（°）	232.3	226.2	224.4	47.3	41.1	40.6	37.7	28.5	22.3	44.9	50.7

位置/mm	−0.84	−0.78	−0.72	−0.66	−0.6	−0.54	−0.48	−0.42	−0.36	−0.3	−0.24
编号	30	29	28	28	27	26	25	25	24	23	21
旋转角度/（°）	44.5	48.6	47.6	41.4	41	44.2	47.3	41.1	40.5	36.3	73.4

位置/mm	−0.18	−0.12	−0.06	0	0.06	0.12	0.18	0.24	0.3	0.36	0.42
编号	20	20	19	18	18	17	16	15	15	14	13
旋转角度/（°）	73.6	67.3	66.2	65.6	59.4	60.4	61.6	59.3	53.2	50.1	−131.2

位置/mm	0.48	0.54	0.6	0.66	0.72	0.78	0.84	0.9	0.96	1.02	1.08
编号	13	12	11	11	10	9	9	8	7	6	6
旋转角度/（°）	−137.3	−136.3	−138.3	−144.5	−145.2	−145.5	−151.6	−152.5	−153.6	−152.5	−158.6

位置/mm	1.14	1.2	1.26	1.32	1.38	1.44	1.5
编号	5	5	4	3	2	2	1
旋转角度/（°）	−157.7	−163.8	−163.4	−163.4	−163.8	−170	−170.1

Table 2. Structural unit arrangement of deflector

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Dong YU, Qingqing CHENG. Terahertz broadband achromatic deflector design[J]. Optical Instruments, 2019, 41(6): 54

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