2-dimensional in-plane displacement measurement system at fast sampling rate of 5 kHz using sinusoidal phase modulation interferometer | Journal of the European Optical Society-Rapid Publications

EOSAM 2024

Open Access

Table 1

Mixing into I_cos and I_sin from harmonics, when m = 3.14 rad.

Harmonic order k	cos or sin	$\frac{J_{k} (m)}{J_{2} (m)} %$ $\frac{{J}_k(m)}{{J}_2(m)}\%$	$\frac{J_{k} (m)}{J_{3} (m)} %$ $\frac{{J}_k(m)}{{J}_3(m)}\%$	Mixing into equation (5)	Mixing into equation (6)
0	cos 0	−62.576	−91.175	0	0
1	sin ω_mt	58.756	85.609	0	0
2	cos 2ω_mt	100.000	145.703	1	0
3	sin 3ω_mt	68.633	100.000	0	1
4	cos 4ω_mt	31.145	45.379	0	0
5	sin 5ω_mt	10.718	15.616	0	0
6	cos 6ω_mt	2.988	4.354	1	0
7	sin 7ω_mt	0.702	1.023	0	0
8	cos 8ω_mt	0.143	0.208	0	0
9	sin 9ω_mt	0.026	0.037	0	−1
10	cos 10ω_mt	0.004	0.006	1	0

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