Development of a new method for the evaluation of third nonlinear optical properties of powder crystals

开发粉体晶体第三非线性光学性质评价新方法

• 批准号: 09554031
• 负责人: NAKAMURA Takayoshi
• 金额: $ 7.81万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09554031/
• 关键词: the third optical non-linear effect; four wave mixing; evanescent wave; 電荷移動錯体

In this work, we developed the equipment based on FWMEW to determine the third optical non-linearity precisely of the powder samples having a large absorption band in the visible range. We measured the chi^<(3)> values of the powder or thin-film samples using this equipment and confirmed the effectiveness of the method. At present, due to the large reflection from the prism surface and the diffraction at the prism-sample interface, the application of FWMEW method is limited to the large chi^<(3)> samples such as VO-Pc or Pt-dimethylglyoxim. Although the THEW method has much higher sensitivity, the FWMEW method has the merit that the measurements under non-resonant conditions are easy. Now, we are improving the SIN on the measurements of FWMEW.In the mean time, we developed the charge-trensfer-complex LB films having optical non-linearity. The preliminary studies on the second order effect by the field modulating spectroscopy were performed. The evaluation of the optical non-linearlity on the power samples of charge transfer compleses such as (TBA)(EtO-C[C(CN)_2]_2and (EtO-TCA) is also started.

在这项工作中，我们研制了基于FWMEW的装置，以精确地测量在可见光范围内具有较大吸收带的粉末样品的三阶光学非线性。利用该装置对粉末或薄膜样品进行了X^lt；(3)&gt；值的测量，证实了该方法的有效性。目前，由于棱镜表面的大反射和棱镜-样品界面的衍射，FWMEW方法的应用仅限于VO-Pc或铂-丁二酮肟等大尺寸样品。虽然Thew方法具有更高的灵敏度，但FWMEW方法具有在非共振条件下易于测量的优点。目前，我们正在对四波混频的测量方法进行改进，同时研制出具有光学非线性的电荷传递络合物LB膜。利用场调制谱对二阶效应进行了初步研究。并对(TBA)(ETO-C[C(CN)_2]_2和(ETO-TCA))等电荷转移络合物的功率样品的光学非线性进行了评价。

项目成果

J. Kawamata: "Molecular and Crystal Structure of Novel Second-Order Nonlinear Optical Crystals : a, a'-Dibenxylidenecycloalkanones" Bull.Chem.Soc.Jpn.71. 2777-2786 (1998)

J. Kawamata：“新型二阶非线性光学晶体的分子和晶体结构：a, a-二苯亚甲基环烷酮”Bull.Chem.Soc.Jpn.71。

T. Akutagawa: "Nonlinear Optical Properties of Langmuir-Blodgett Films of Pyrazine-based Dye Molecule" Nonlinear Optics. in press.

T. Akutakawa：“基于吡嗪的染料分子的 Langmuir-Blodgett 薄膜的非线性光学特性”非线性光学。

T.Nakamura, T.Yumoto, T.Suzuki, T.Akutagawa, T.Hasegawa, H.Tachibana, M.Matsumoto, S.Horiuchi, H.Ikegami, H.Yamochi and G.Saito: "Electrical and Nonlinear Optical Properties of Langmuir-Blodgett Films of Charge Transfer Complexes" Mol.Cryst.Liq.Cryst.(in

T.Nakamura、T.Yumoto、T.Suzuki、T.Akutakawa、T.Hasekawa、H.Tachibana、M.Matsumoto、S.Horiuchi、H.Ikegami、H.Yamochi 和 G.Saito：“电学和非线性光学性质

K.Ikegami, M.Lan and T.Nakamura: "Optical Characterization of Langmuir-Blodgett Films of AlkylDCNQI and AlkylDCNQI-Cu Complexes" Synthetic Metals. (in press).

K.Ikegami、M.Lan 和 T.Nakamura：“AlkylDCNQI 和 AlkylDCNQI-Cu 配合物的 Langmuir-Blodgett 薄膜的光学表征”合成金属。

T.Hasegawa: "Valance-Modulation-Induced Optical Nonlinearlity of Intermolecular Charge-Transfer Langmuir-Blodgett Films" Nonlinear Optics. (in press).

T.Hasekawa：“分子间电荷转移 Langmuir-Blodgett 薄膜的价调制引起的光学非线性”非线性光学。