| Issue |
EPL
Volume 93, Number 1, January 2011
|
|
|---|---|---|
| Article Number | 13001 | |
| Number of page(s) | 5 | |
| Section | Atomic, Molecular and Optical Physics | |
| DOI | https://doi.org/10.1209/0295-5075/93/13001 | |
| Published online | 28 January 2011 | |
Two-photon absorption in diacrylate mesogens at 632.8 nm wavelength
Department of Photonics, National Sun Yat-Sen University - 70 Lienhai Road, Kaohsiung 80424, Taiwan, ROC
Received:
19
August
2010
Accepted:
20
December
2010
Two-photon absorption has been observed in diacrylate mesogens for a low-power continuous laser irradiation at 632.8 nm wavelength. The two-photon absorption coefficients for the mesogens in different phases are determined, and found to be very large. In the isotropic state, the two-photon absorption coefficients of diacrylate mesogen RM257 can reach (4.36 ±0.49)×10−4 cm/mW. A larger two-photon absorption coefficient ((5.20 ±0.59)×10−4 cm/mW) has been observed in the nematic phase RM257.
PACS: 33.80.Wz – Other multiphoton processes / 61.30.Vx – Polymer liquid crystals / 42.70.Gi – Light-sensitive materials
© EPLA, 2011
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