Acta Optica Sinica, Volume. 31, Issue s1, 100114(2011)
Numerical Analysis of Optical Properties under Oblique Incidence of Laser in Optical Thin Films
Considering optical thin films irradiated by laser at oblique incidence, the electric vector is orthogonally decomposed into s-polarization and p-polarization. And based on the Maxwell equations, electromagnetic-field distribution in optical thin films is obtained. Then the optical properties of optical thin films are numerically analyzed. The results about high-reflection thin film show some features as follows. With the increase of the angle of incidence, the reflectance, transmittance and absorptivity of s-polarized light have tiny fluctuations. But for p-polarized light, obviously, the reflectance shows gradually decrease while the transmittance and absorptivity are opposite. And near the central wavelength in high-reflection thin film, both s-polarized light and p-polarized light have a high-reflectance broadband. Compared with s-polarized light, the broadband for p-polarized light is manifestly narrower and the absorptivity is relatively higher.
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He Minbo, Jiang Houman, Chen Minsun, Yuan Chun. Numerical Analysis of Optical Properties under Oblique Incidence of Laser in Optical Thin Films[J]. Acta Optica Sinica, 2011, 31(s1): 100114
Category: Materials
Received: Jan. 18, 2011
Accepted: --
Published Online: Jun. 27, 2011
The Author Email: Minbo He (hmb203@gmail.com)