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Broadband two-photon absorption and optical power limiting properties of a novel organic compound

He Guo-Hua Zhang Jun-Xiang Ye Li-Hua Cui Yi-Ping Li Zhen-Hua Lai Jian-Cheng He An-Zhi

Broadband two-photon absorption and optical power limiting properties of a novel organic compound

He Guo-Hua, Zhang Jun-Xiang, Ye Li-Hua, Cui Yi-Ping, Li Zhen-Hua, Lai Jian-Cheng, He An-Zhi
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Publishing process
  • Received Date:  21 October 2002
  • Accepted Date:  06 December 2002
  • Published Online:  05 April 2003

Broadband two-photon absorption and optical power limiting properties of a novel organic compound

  • 1. (1)东南大学电子工程系,南京 210096; (2)南京理工大学应用物理系,南京 210094

Abstract: The two-photon absorption (TPA) property and optical power limiting behaviour of a novel double-conjugated segment organic molecule have been investigated, and its TPA spectrum and optical power limiting curve have been experimentally obtai ned. Strong TPA and broadband optical power limiting properties from 700 nm to 1 100 nm in the near infrared region have been demonstrated in the tetrahydrofuran (THF) solution with 1×10-2mol/L concentration. It has three peaks o f TPA cross section at 730,850 and 980 nm. The maximum TPA cross section is σ′ 2=25.9×10-47cm4·s·photon-1 at 850nm, which is about 1-2 orders of magnitude larger than usual organic molecules.

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