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A technique for direct measurement of group delay of optical elements is introduced. With the joint time-frequency analysis of white-light spectral interferogram, group delay can be directly extracted from the ridge of wavelet-transform. The technique is accurate and simple. The measurement results of group delay and group delay dispersion of a piece of fused silica was demonstrated. The results agree well with those from theoretical calculation, and the noise is greatly reduced. This technique is suitable for various application of white-light interferometer.
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Keywords:
- dispersion measurement /
- white-light interference /
- time-frequency analysis /
- ultrafast laser
[1] Naganuma K, Mogi K, Yamada H 1990 Opt. Lett. 15 393
[2] Lee J Y, Kim D Y 2006 Opt. Express 14 11608
[3] Reolon D, Jacquot M, Verrier I, Brun G, Veillas C 2006 Opt. Express 14 12744
[4] Zhao Y C, Fleming S 2005 Meas. Sci. Technol. 16 1628
[5] Deng Y, Wu Z, Chai L, Wang C, Yamane K, Morita R, Yamashita M, Zhang Z 2005 Opt. Express 13 2120
[6] Deng Y Q, Wu Z B, Chen S H, Chai L, Wang Q Y, Zhang Z G 2005 Acta Phys. Sin. 54 3716 (in Chinese) [邓玉强、 吴祖斌、 陈盛华、 柴 路、 王清月、 张志刚 2005 54 3716]
[7] Deng Y Q, Xing Q R, Lang L Y, Chai L, Wang Q Y, Zhang Z G 2005 Acta Phys. Sin. 54 5224 (in Chinese) [邓玉强、 邢岐荣、 郎利影、 柴 路、 王清月、 张志刚 2005 54 5224] 〖8] Deng Y Q, Lang L Y, Xing Q R, Cao S Y, Yu J, Xu T, Li J, Xiong L M, Wang Q Y, Zhang Z G 2008 Acta Phys. Sin. 57 7747 (in Chinese) [邓玉强、 郎利影、 邢岐荣、 曹士英、 于 靖、 徐 涛、 李 健、 熊利民、 王清月、 张志刚 2008 57 7747]
[8] Deng Y Q, Cao S Y, Yu J, Xu T, Wang Q Y, Zhang Z G 2008 Acta Phys. Sin. 57 7017 (in Chinese) [邓玉强、 曹士英、 于 靖、 徐 涛、 王清月、 张志刚 2008 57 7017]
[9] Deng Y, Yang W, Zhou C, Wang X, Tao J, Kong W, Zhang Z 2008 Opt. Lett. 33 2855
[10] Deng Y, Yang W, Zhou C, Wang X, Tao J, Kong W, Zhang Z 2009 Opt. Express 17 6038
[11] Deng Y, Wang C, Zhang Z 2009 Appl. Phys. B 81 1107
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[1] Naganuma K, Mogi K, Yamada H 1990 Opt. Lett. 15 393
[2] Lee J Y, Kim D Y 2006 Opt. Express 14 11608
[3] Reolon D, Jacquot M, Verrier I, Brun G, Veillas C 2006 Opt. Express 14 12744
[4] Zhao Y C, Fleming S 2005 Meas. Sci. Technol. 16 1628
[5] Deng Y, Wu Z, Chai L, Wang C, Yamane K, Morita R, Yamashita M, Zhang Z 2005 Opt. Express 13 2120
[6] Deng Y Q, Wu Z B, Chen S H, Chai L, Wang Q Y, Zhang Z G 2005 Acta Phys. Sin. 54 3716 (in Chinese) [邓玉强、 吴祖斌、 陈盛华、 柴 路、 王清月、 张志刚 2005 54 3716]
[7] Deng Y Q, Xing Q R, Lang L Y, Chai L, Wang Q Y, Zhang Z G 2005 Acta Phys. Sin. 54 5224 (in Chinese) [邓玉强、 邢岐荣、 郎利影、 柴 路、 王清月、 张志刚 2005 54 5224] 〖8] Deng Y Q, Lang L Y, Xing Q R, Cao S Y, Yu J, Xu T, Li J, Xiong L M, Wang Q Y, Zhang Z G 2008 Acta Phys. Sin. 57 7747 (in Chinese) [邓玉强、 郎利影、 邢岐荣、 曹士英、 于 靖、 徐 涛、 李 健、 熊利民、 王清月、 张志刚 2008 57 7747]
[8] Deng Y Q, Cao S Y, Yu J, Xu T, Wang Q Y, Zhang Z G 2008 Acta Phys. Sin. 57 7017 (in Chinese) [邓玉强、 曹士英、 于 靖、 徐 涛、 王清月、 张志刚 2008 57 7017]
[9] Deng Y, Yang W, Zhou C, Wang X, Tao J, Kong W, Zhang Z 2008 Opt. Lett. 33 2855
[10] Deng Y, Yang W, Zhou C, Wang X, Tao J, Kong W, Zhang Z 2009 Opt. Express 17 6038
[11] Deng Y, Wang C, Zhang Z 2009 Appl. Phys. B 81 1107
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