Acta Optica Sinica, Volume. 32, Issue 2, 219003(2012)
Experimental Investigation of the Two-Color Holographic Recording in Near-Stoichiometric LiNbO3 Crystals
We investigate systematically two-color holographic recording properties such as the saturated diffraction efficiency and recording sensitivity in the near-stoichiometric LiNbO3 crystals with different dopants and oxidation-reduction (O-R) states. In the two-color recording experiment, the volume holographic gratings is recorded by red light, simultaneously sensitized by violet light. The results show that the saturated diffraction efficiency increases and later decreases with the increase of the ratio of recording light intensity to sensitizing beam intensity, but the sensitivity decreases gradually. Higher Tb-doping density makes higher diffraction efficiency but lower sensitivity when the Mn-doping density keeps the same. Crystal doping with Mn makes higher sensitivity but lower diffraction efficiency when the Tb-doping density keeps the same. The saturated diffraction efficiency and recording sensitivity of the reduction crystal are higher than those of the oxidation crystal. The saturated diffraction efficiency and sensitivity depend on the ratio of recording light intensity to sensitizing beam intensity, the doping concentration and the O-R state. An optimization may be obtained by further modifying these conditions appropriately.
Get Citation
Copy Citation Text
Yang Yongmei, Liu Youwen, Zhang Yanli. Experimental Investigation of the Two-Color Holographic Recording in Near-Stoichiometric LiNbO3 Crystals[J]. Acta Optica Sinica, 2012, 32(2): 219003
Category: Nonlinear Optics
Received: Aug. 10, 2011
Accepted: --
Published Online: Jan. 6, 2012
The Author Email: Yongmei Yang (yongym@nuist.edu.cn)