Researching | Main Factor Analysis for Imaging Performance of Hand-Held Full-Field Optical Coherence Tomography System with Dual Interferometers

Journals >Laser & Optoelectronics Progress >Volume 60 >Issue 12 >Page 1217002 > Article

Laser & Optoelectronics Progress
Vol. 60, Issue 12, 1217002 (2023)

Main Factor Analysis for Imaging Performance of Hand-Held Full-Field Optical Coherence Tomography System with Dual Interferometers

Ran Li, Wanrong Gao^*, and Yifeng Tang

Author Affiliations

School of Electronic and Optical Engineering, Nanjing University of Science & Technology, Nanjing 210094, Jiangsu, China

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DOI: 10.3788/LOP221765 Cite this Article Set citation alerts

Ran Li, Wanrong Gao, Yifeng Tang. Main Factor Analysis for Imaging Performance of Hand-Held Full-Field Optical Coherence Tomography System with Dual Interferometers[J]. Laser & Optoelectronics Progress, 2023, 60(12): 1217002 Copy Citation Text

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Abstract

In this study, we report an improved hand-held full-field optical coherence tomography (FFOCT) system based on a combination of double interferometers. The system uses a Fizeau interferometer for detection and a Michelson interferometer for compensation. The initial system was modified by the addition of a plane mirror to alter its optical path and to make it easier to arrange samples horizontally. The analysis was conducted on how the system's imaging quality and compensation distance were affected by the angle deviation between the mirror and other key components of the system. The obtained results are useful for the design and optimization of the hand-held FFOCT system.

Keywords

angle deviation error analysis full-field optical coherence tomography imaging system

I (δ) = e x p [- {(\frac{2 (δ - δ_{s})}{Δ l})}^{2}] c o s [\frac{2 π}{λ_{0}} (δ - δ_{s})]

，（1）

V = [- {(\frac{2 (δ - δ_{s})}{Δ l})}^{2}]

。（2）

|Δ| \leq Δ l

。（3）

Δ = Δ_{1} + Δ_{2} + Δ_{3}

。（4）

Δ_{1} = I_{1} - I_{2} = Δ x + \frac{Δ x + x}{c o s 2 θ - \frac{s i n 2 θ}{t a n (45 ° + φ)}} - x

。（5）

d_{1} = \frac{Δ x + x}{c o s 2 θ - \frac{s i n 2 θ}{t a n (45 ° + φ)}} \cdot s i n 2 θ

。（6）

\begin{array}{l} Δ_{2} = I_{1} - I_{2} = d_{2} [\frac{1}{c o s (2 θ - 2 φ) - \frac{s i n (2 θ - 2 φ)}{t a n (45 ° + α)}} - \\ \frac{1}{c o s 2 θ + \frac{s i n 2 θ}{t a n (45 ° + α)}}] \end{array}

。（7）

Δ_{3} = I_{1} - I_{2} = \frac{d_{4}}{c o s (2 α + 2 θ - 2 φ)} - \frac{Δ d + d_{3} + d_{4}}{c o s (2 α - 2 θ)}

。（8）

d_{3} = \frac{d_{1} \cdot c o s (45 ° + α)}{s i n (45 ° + φ)} + d_{2} [\frac{1}{c o t 2 θ + t a n (45 ° + α)} - \frac{1}{c o t (2 φ - 2 θ) + t a n (45 ° + α)}]

。（9）

Δ = 2 Δ x - \frac{2 Δ d}{c o s 2 α}

。（10）

\frac{Δ d}{c o s 2 α} - 0.605 \leq Δ x \leq 0.605 + \frac{Δ d}{c o s 2 α}

。（11）

Δ = Δ x + \frac{Δ x + x}{c o s 2 θ - s i n 2 θ} - x + 2 d_{2} (\frac{1}{c o s 2 θ - s i n 2 θ} - \frac{1}{c o s 2 θ + s i n 2 θ}) - 2 \frac{Δ d + d_{3}}{c o s 2 θ}

，（12）

d_{3} = d_{1} = \frac{Δ x + x}{c o s 2 θ - s i n 2 θ} \cdot s i n 2 θ

。（13）

Δ = 2 Δ x - \frac{2 Δ d}{c o s 2 φ}

。（14）

Δ = Δ x + \frac{Δ x + x}{c o s 2 θ - s i n 2 θ} - x + d_{2} [\frac{c o s (45 ° + α)}{s i n (45 ° - α - 2 θ)} - 1] + \frac{d_{4}}{c o s (2 α + 2 θ)} - \frac{Δ d + d_{2} + d_{3}}{c o s 2 α}

，（15）

d_{1} = \sqrt[]{2} \cdot s i n 2 θ \cdot \frac{Δ x + x}{c o s 2 θ - s i n 2 θ}

，（16）

d_{3} = \frac{d_{2}}{c o t 2 θ - c o t (45 ° - α)} + 2 c o s (45 ° + α) \cdot \frac{Δ x + x}{c o t 2 θ - 1}

。（17）

Δ = 2 Δ x - \frac{2 Δ d}{c o s (2 α - 2 φ)}

。（18）

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Ran Li, Wanrong Gao, Yifeng Tang. Main Factor Analysis for Imaging Performance of Hand-Held Full-Field Optical Coherence Tomography System with Dual Interferometers[J]. Laser & Optoelectronics Progress, 2023, 60(12): 1217002

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