Transfer of orbital angular momentum to metal particles confined using optical tweezers

被引：1

作者：

O'Neil, AT ^{[1
]}

Padgett, MJ ^{[1
]}

机构：

[1] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

来源：

LASER APPLICATIONS IN MICROELECTRONIC AND OPTOELECTRONIC MANUFACTURING VI | 2001年 / 4274卷

关键词：

orbital angular momentum; optical tweezers; Laguerre-Gaussian modes;

D O I：

10.1117/12.432508

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using Laguerre-Gaussian beams in an inverted optical tweezers geometry we observe that silver particles, 2 mum in diameter, are confined to an annulus around the outside of the beam. This annulus is situated 4 mum below the beam waist where the upward scattering force counterbalances gravity. The scattering force results in a transfer of the orbital angular momentum content of the beam to the particle causing it to rotate about the beam axis.

引用

页码：177 / 182

页数：4

共 17 条

[1] The Poynting vector in Laguerre-Gaussian beams and the interpretation of their angular momentum density [J].

Allen, L ;

Padgett, MJ .

OPTICS COMMUNICATIONS, 2000, 184 (1-4) :67-71

[2] ORBITAL ANGULAR-MOMENTUM OF LIGHT AND THE TRANSFORMATION OF LAGUERRE-GAUSSIAN LASER MODES [J].

ALLEN, L ;

BEIJERSBERGEN, MW ;

SPREEUW, RJC ;

WOERDMAN, JP .

PHYSICAL REVIEW A, 1992, 45 (11) :8185-8189

[3] OBSERVATION OF A SINGLE-BEAM GRADIENT FORCE OPTICAL TRAP FOR DIELECTRIC PARTICLES [J].

ASHKIN, A ;

DZIEDZIC, JM ;

BJORKHOLM, JE ;

CHU, S .

OPTICS LETTERS, 1986, 11 (05) :288-290

[4] Mechanical detection and measurement of the angular momentum of light [J].

Beth, RA .

PHYSICAL REVIEW, 1936, 50 (02) :115-125

[5] Rotational frequency shift of a light beam [J].

Courtial, J ;

Robertson, DA ;

Dholakia, K ;

Allen, L ;

Padgett, MJ .

PHYSICAL REVIEW LETTERS, 1998, 81 (22) :4828-4830

[6] Measurement of the rotational frequency shift imparted to a rotating light beam possessing orbital angular momentum [J].

Courtial, J ;

Dholakia, K ;

Robertson, DA ;

Allen, L ;

Padgett, MJ .

PHYSICAL REVIEW LETTERS, 1998, 80 (15) :3217-3219

[7] Optical alignment and spinning of laser-trapped microscopic particles [J].

Friese, MEJ ;

Nieminen, TA ;

Heckenberg, NR ;

Rubinsztein-Dunlop, H .

NATURE, 1998, 394 (6691) :348-350

[8] Optical angular-momentum transfer to trapped absorbing particles [J].

Friese, MEJ ;

Enger, J ;

RubinszteinDunlop, H ;

Heckenberg, NR .

PHYSICAL REVIEW A, 1996, 54 (02) :1593-1596

[9] Optical trapping of metallic particles by a fixed Gaussian beam [J].

Furukawa, H ;

Yamaguchi, I .

OPTICS LETTERS, 1998, 23 (03) :216-218

[10] Enhancement of transverse trapping efficiency for a metallic particle using an obstructed laser beam [J].

Gu, M ;

Morrish, D ;

Ke, PC .

APPLIED PHYSICS LETTERS, 2000, 77 (01) :34-36

← 1 2 →