Design of 3D Locking System for Interference Fringes of Holographic Grating

Guolin Qian; Jianhong Wu; Chaoming Li; Juefei Cheng

doi:10.3788/AOS201939.0405001

Journals >Acta Optica Sinica >Volume 39 >Issue 4 >Page 0405001 > Article

Acta Optica Sinica
Vol. 39, Issue 4, 0405001 (2019)

Design of 3D Locking System for Interference Fringes of Holographic Grating

Guolin Qian^1、2、*, Jianhong Wu^1、*, Chaoming Li¹, and Juefei Cheng²

Author Affiliations

¹ School of Optoelectronic Science and Engineering, Soochow University, Suzhou, Jiangsu 215006, China

² College of Electronic Information Engineering & Engineering Research and Development Center for Photovoltaic Technology of Jiangsu Province, Suzhou Vocational University, Suzhou, Jiangsu 215106, China;

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DOI: 10.3788/AOS201939.0405001 Cite this Article Set citation alerts

Guolin Qian, Jianhong Wu, Chaoming Li, Juefei Cheng. Design of 3D Locking System for Interference Fringes of Holographic Grating[J]. Acta Optica Sinica, 2019, 39(4): 0405001 Copy Citation Text

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Fig. 1. Configuration of 3D locking system of holographic grating

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Fig. 2. Relative position of reference grating and optical grating

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Fig. 3. Reference interference fringes Ct for detecting period of optical grating

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Fig. 4. Interference fringe formed by grating Gb. (a) Reference interference fringe Cb0; (b) real-time interference fringe Cbs

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Fig. 5. Locking effect of period of real-time interference fringes

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Fig. 6. Interference fringes in holographic exposure system

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Fig. 7. Exposures of interference fringes when phase unlocked and locked. (a)(b) Δt1=30 min; (c)(d) Δt2=30 min; (e)(f) Δt3=30 min; (g)(h) Δt4=30 min

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Exposure time	Phase				Contrast
Exposure time	${Φ_{A}}_{}$ /λ	${Φ_{B}}_{}$ /λ	${Φ_{C}}_{}$ /λ	${Φ_{D}}_{}$ /λ	ν_A	ν_B	ν_C	ν_D
Δt₁	0.000	0.000	0.000	0.000	0.523	0.481	0.521	0.595
Δt₂	0.082	0.148	0.279	0.311	0.105	0.125	0.158	0.126
Δt₃	-0.328	-0.246	-0.246	-0.131	0.241	0.258	0.273	0.299
Δt₄	-0.607	-0.525	-0.557	-0.393	0.400	0.377	0.368	0.325

Table 1. Phase and contrast of exposure fringe when fringe locking system is closed

Exposure time	Phase				Contrast
Exposure time	${Φ_{A}}_{}$ /λ	${Φ_{B}}_{}$ /λ	${Φ_{C}}_{}$ /λ	${Φ_{D}}_{}$ /λ	ν_A	ν_B	ν_C	ν_D
Δt₁	0.000	0.000	0.000	0.000	0.773	0.825	0.995	0.524
Δt₂	0.016	-0.381	0.000	-0.317	0.899	0.878	0.995	0.873
Δt₃	-0.048	-0.476	0.000	-0.349	0.910	0.947	0.997	0.927
Δt₄	-0.063	-0.476	0.000	-0.302	0.906	0.934	0.997	0.916

Table 2. Phase and contrast of exposure fringe when phase locked

Exposure time	Phase				Contrast
Exposure time	${Φ_{A}}_{}$ /λ	${Φ_{B}}_{}$ /λ	${Φ_{C}}_{}$ /λ	${Φ_{D}}_{}$ /λ	ν_A	ν_B	ν_C	ν_D
Δt₁	0.000	0.000	0.000	0.000	0.824	0.837	0.994	0.987
Δt₂	0.044	0.044	0.000	0.000	0.927	0.903	0.994	0.988
Δt₃	0.029	0.029	0.000	0.000	0.916	0.926	0.994	0.989
Δt₄	0.029	0.015	0.000	0.000	0.895	0.914	0.992	0.989

Table 3. Phase and contrast of exposure fringe when phase and tilt locked

Exposure time	Phase				Contrast
Exposure time	${Φ_{A}}_{}$ /λ	${Φ_{B}}_{}$ /λ	${Φ_{C}}_{}$ /λ	${Φ_{D}}_{}$ /λ	ν_A	ν_B	ν_C	ν_D
Δt₁	0.000	0.000	0.000	0.000	0.987	0.935	0.993	0.984
Δt₂	0.000	0.025	0.000	0.000	0.986	0.929	0.993	0.984
Δt₃	0.000	0.013	0.000	0.000	0.985	0.926	0.992	0.983
Δt₄	0.000	0.013	0.000	0.000	0.985	0.928	0.993	0.983

Table 4. Phase and contrast of exposure fringe when 3D fringe locked

Guolin Qian, Jianhong Wu, Chaoming Li, Juefei Cheng. Design of 3D Locking System for Interference Fringes of Holographic Grating[J]. Acta Optica Sinica, 2019, 39(4): 0405001

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