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Optical tweezer technology is widely used in trapping and manipulating micro-and nano-sized particles, mainly including the trapping of transparent particles in water and the trapping of absorbing particles in air. In this paper, a frosted glass diffuser is irradiated by laser beam, and a subjective speckle field is generated in the image plane of a lens after the laser has transmitted the lens. The speckle field is spatially distributed, and contains multiple bright spots and dark spots. A large number of dark spots surrounded by bright spots are spatial energy traps, and can be used to trap a large number of absorbing particles. The sizes and densities of trapped particles are about 2–8 μm and 1–2 g/cm3. In addition, an infrared microscope is used to record the infrared images of the particles trapped by the speckle field, and the infrared images show that the temperature of trapped particles rises by absorbing the light energy, which verifies that the mechanism of trapping absorbing particles by speckle field is photophoretic force.
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Keywords:
- optical tweezers /
- space speckle field /
- photophoretic force /
- infrared microscopy
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[4] Brzobohatý, Karásek V, Šiler M, Chvátal L, Čižmár T, Zemánek P 2013 Nature Photon. 7 123
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[17] Li B J, Xin H B, Zhang Y, Lei H X 2011 Acta Opt. Sin. 31 0900126 (in Chinese) [李宝军, 辛洪宝, 张垚, 雷宏香 2011 光学学报 31 0900126]
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[20] Zhang Q C, Zhang Z G, Liu F R, Zhang Y, Liu S, Wu X P 2012 Chinese Patent 201210366305 (2012-09-27) (in Chinese) [张青川, 张志刚, 刘丰瑞, 张勇, 刘爽, 伍小平 2012 中国专利 申请号: 201210366305.5 [2012-09-27]]
[21] Wang K F, Gao M H 2010 Speckle Metrology (Beijing: Beijing Institute of Technology Press) p1 (in Chinese) [王开福, 高明慧 2010 散斑计量 (北京: 北京理工大学出版社) 第1页]
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[26] Cheng T, Zhang Q C, Chen D P, Wu X P, Shi H T, Gao J 2009 Acta Phys. Sin. 58 852 (in Chinese) [程腾, 张青川, 陈大鹏, 伍小平, 史海涛, 高杰 2009 58 852]
[27] Zhang Z G, Liu F R, Zhang Q C, Cheng T, Gao J, Wu X P 2013 Acta Phys. Sin. 62 208702 (in Chinese) [张志刚, 刘丰瑞, 张青川, 程腾, 高杰, 伍小平 2013 62 208702]
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[1] Grier D G 2003 Nature 424 810
[2] MacDonald M P, Spalding G C, Dholakla K 2003 Nature 426 421
[3] Baumgartl J, Mazilu M, Dholakia K 2008 Nature Photon. 2 675
[4] Brzobohatý, Karásek V, Šiler M, Chvátal L, Čižmár T, Zemánek P 2013 Nature Photon. 7 123
[5] Horstmann M, Probst K, Fallnich C 2012 Lab. on a Chip. 12 295
[6] Li X C, Sun X D 2010 Chin. Phys. B 19 119401
[7] Chen H, Guo Y, Chen Z, Hao J, Xu J, Wang H T, Ding J 2013 J. Opt. 15 035401
[8] Zhang P, Zhang Z, Prakash J, Huang S, Hernandez D, Salazar M, Christodoulides D N, Chen Z 2011 Opt. Lett. 36 1491
[9] Shvedov V G, Rode A V, Izdebskaya Y V, Desyatnikov A S, Krolikowski W, Kivshar Y S 2010 Phys. Rev. Lett. 105 118103
[10] Li Q, Feng W L, Hu X M, Cao Q, Sha D G, Lin J M 2008 Chin. Phys. B 17 726
[11] Ashkin A 1970 Phys. Rev. Lett. 24 156
[12] Shvedov V G, Desyatnikov A S, Rode A V, Krolikowski W, Kivshar Y S 2009 Opt. Express 17 5743
[13] Hu G J, Li J, Long Q, Tao T, Zhang G X, Wu X P 2011 Acta Phys. Sin. 60 030301 (in Chinese) [胡耿军, 李静, 龙潜, 陶陶, 张恭轩, 伍小平 2011 60 030301]
[14] Jiang Y Q, Guo H L, Liu C X, Li Z L, Cheng B Y, Zhang D Z, Jia S T 2004 Acta Phys. Sin. 53 1721 (in Chinese) [降雨强, 郭红莲, 刘春香, 李兆霖, 程丙英, 张道中, 贾锁堂 2004 53 1721]
[15] Xu S H, Li Y M, Lou L R 2008 Chin. Phys. B 15 1391
[16] Ren H L, Ding P F, Li X Y 2012 Acta Phys. Sin. 61 210701 (in Chinese) [任洪亮, 丁攀峰, 李小燕 2012 61 210701]
[17] Li B J, Xin H B, Zhang Y, Lei H X 2011 Acta Opt. Sin. 31 0900126 (in Chinese) [李宝军, 辛洪宝, 张垚, 雷宏香 2011 光学学报 31 0900126]
[18] Shvedov V G, Rode A V, Izdebskaya Y V, Desyatnikov A S, Krolikowski W, Kivshar Y S 2010 Opt. Express 18 3137
[19] Zhang Q C, Zhang Z G, Liu F R, Liu S, Wu X P 2012 Chinese Patent 201210275567.0 (2012-08-03) (in Chinese) [张青川, 张志刚, 刘丰瑞, 刘爽, 伍小平 2012 中国专利 申请号: 201210275567. 0 [2012-08-03]]
[20] Zhang Q C, Zhang Z G, Liu F R, Zhang Y, Liu S, Wu X P 2012 Chinese Patent 201210366305 (2012-09-27) (in Chinese) [张青川, 张志刚, 刘丰瑞, 张勇, 刘爽, 伍小平 2012 中国专利 申请号: 201210366305.5 [2012-09-27]]
[21] Wang K F, Gao M H 2010 Speckle Metrology (Beijing: Beijing Institute of Technology Press) p1 (in Chinese) [王开福, 高明慧 2010 散斑计量 (北京: 北京理工大学出版社) 第1页]
[22] Goodman J W (Translated by Cao Q Z, Chen J B) 2009 Speckle Phenomena in Optics: Theory and Application (Beijing: Science Press) pp69–71 (in Chinese) [古德曼 J W 著 (曹其智, 陈家壁译) 2009 光学中的散斑现象: 理论与应用 (北京: 科学出版社) 第69–71页]
[23] Lewittes M, Arnold S, Oster G 1982 Appl. Phys. Lett. 40 455
[24] Zhang Z G, Cheng T, Zhang Q C, Mao L, Gao J, Wu X P 2013 J. Appl. Phys. 114 093106
[25] Zhang Z G, Mao L, Cheng T, Zhang Q C 2013 J. Infrared Millim. Waves 32 331 (in Chinese) [张志刚, 毛亮, 程腾, 张青川 2013 红外与毫米波学报 32 331]
[26] Cheng T, Zhang Q C, Chen D P, Wu X P, Shi H T, Gao J 2009 Acta Phys. Sin. 58 852 (in Chinese) [程腾, 张青川, 陈大鹏, 伍小平, 史海涛, 高杰 2009 58 852]
[27] Zhang Z G, Liu F R, Zhang Q C, Cheng T, Gao J, Wu X P 2013 Acta Phys. Sin. 62 208702 (in Chinese) [张志刚, 刘丰瑞, 张青川, 程腾, 高杰, 伍小平 2013 62 208702]
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