Table 1 Summary of total 36 phase pairs with corresponding unit cell configurations

From: Wavelength-decoupled geometric metasurfaces by arbitrary dispersion control

Structure

Rotation angle (rad)

0

π/6

2π/6

3π/6

4π/6

5π/6

S1

(0, −π)

(π/3, −2π/3)

(2π/3, −π/3)

(−π, 0)

(−2π/3, π/3)

(−π/3, 2π/3)

S2

(0, 2π/3)

(π/3, −π)

(2π/3, −2π/3)

(−π, −π/3)

(−2π/3, 0)

(−π/3, π/3)

S3

(0, π/3)

(π/3, 2π/3)

(2π/3, −π)

(−π, −2π/3)

(−2π/3, −π/3)

(−π/3, 0)

S4

(0, 0)

(π/3, π/3)

(2π/3, 2π/3)

(−π, −π)

(−2π/3, −2π/3)

(−π/3, −π/3)

S5

(0, −π/3)

(π/3, 0)

(2π/3, π/3)

(−π, 2π/3)

(−2π/3, −π)

(−π/3, −2π/3)

S6

(0, −2π/3)

(π/3, −π/3)

(2π/3, 0)

(−π, π/3)

(−2π/3, 2π/3)

(−π/3, −π)

  1. Each phase pair represents transmitted cross-polarization phase values at λ = 532 nm and λ = 635 nm, respectively. For the design convenience, the rotation angles are normalized to particular values that induce zero phase at λ = 532 nm
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