Chin. Phys. Lett.  2001, Vol. 18 Issue (8): 1120-1122    DOI:
Original Articles |
Two-Photon Absorption and Optical Power Limiting Based on New Organic Dyes
ZHOU Guang-Yong1;WANG Chun1;LEI Hong2,3;WANG Dong1;SHAO Zong-Shu1;JIANG Min-Hua1
1State Key Laboratory of Crystal Materials, Shandong University, Ji’nan 250100 2State Key Laboratory of Ultrafast Laser Spectroscopy, Zhongshan University, Guangzhou 510275 3Department of Electronic Engineering, Shandong University, Ji’nan 250100
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ZHOU Guang-Yong, WANG Chun, LEI Hong et al  2001 Chin. Phys. Lett. 18 1120-1122
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Abstract Two new organic dye samples J and L with a large two-photon absorption (TPA) cross section have been reported. The linear absorption spectra show that there is no linear absorption at the wavelength from 650 to 1200 nm. The molecular TPA cross section was measured to be as high as 2.59 x 10-47cm4.s and 2.98 x 10-47cm4.s at 1064 nm for samples J and L, respectively. The input-output curves indicate that there is a clear optical power limiting behaviour when the input intensity is higher than 0.4 GW/cm2. Furthermore, basic theorety of TPA process has been discussed.
Keywords: 78.20.Ci      81.05.Lg      45.25.Bs     
Published: 01 August 2001
PACS:  78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))  
  81.05.Lg (Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials)  
  45.25.Bs  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2001/V18/I8/01120
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ZHOU Guang-Yong
WANG Chun
LEI Hong
WANG Dong
SHAO Zong-Shu
JIANG Min-Hua
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