Microscopic second harmonic generation (SHG) from tilt-placed collagen fibrils

Rok, strany: 2011, 175 - 185

We report a theoretical study of second-harmonic generation (SHG) from the collagen fibrils which have a tilt angle Φ between their axes with the plane of the polarization angle α of the linearly polarized focused light. The effects of Φ as well as α on SHG emission have been investigated. Our results show that the total strength of SHG electrical field (E2ω) and power (P2ω) reach their maximal values as Φ locates at a certain angle, here it is around 27° under all demonstrated α. When Φ < 27°, E2ω and P2ω gradually increase to their maximal value, while when Φ > 27°, they quickly drops. Specially, E2ω and P2ω are almost undetectable when Φ ≥ 45°. Also, Φ influences the distribution pattern of E2ω, P2ω and their parallel (E2ω,p, P2ω,p) and perpendicular (E2ω,s, P2ω,s) components, such as the number of emission lobes and shape. α has unevenly impact on E2ω and P2ω, the far deviation of α from x axis induce much great decrease of E2ω and P2ω. α = 45° has special influence on the distribution pattern of E2ω,s, E2ω, P2ω,s as well as P2ω compared to those of α = 0° and 90°.

ISO 690:

Chang, Y., Wei, H., Jin, Y., Liu, H., Deng, X. 2011. Microscopic second harmonic generation (SHG) from tilt-placed collagen fibrils. In General Physiology and Biophysics, vol. 30, no.2, pp. 175-185. 0231-5882.

APA:

Chang, Y., Wei, H., Jin, Y., Liu, H., Deng, X. (2011). Microscopic second harmonic generation (SHG) from tilt-placed collagen fibrils. General Physiology and Biophysics, 30(2), 175-185. 0231-5882.