Abstract
The dual beam fiber trap is an important tool in the field of optical micromanipulation. The characteristics of these traps are governed by the fibers used. Photonic crystal fibers have emerged in recent years and may be engineered to have vastly different properties to conventional fibers. In particular, endlessly single-mode photonic crystal fiber (ESM-PCF) will guide any wavelength of light in a single-mode and is commercially available in core diameters up to 35 μm. By utilising these unique properties, we show that it is possible to create novel dual beam ESM-PCF traps for micron size particles. Firstly, we characterise an ESM-PCF trap when using a near-infrared laser coupled into a 25 μm core fiber when trapping a sample in a square capillary. We calculate the trap stiffness for polymer micro-spheres and show that aside from the expected confining potential, it is possible to create line and repulsive potentials. Interference effects due to the capillary are observed. Secondly, we create a dual wavelength standing wave trap which can selectively move two sizes of particles in an optical conveyor belt. Finally, we use a supercontinuum source to create the first white light dual beam fiber trap and show that the low coherence length of the source results in interference free potentials. Overall PCF has great promise for future studies.
| Original language | English |
|---|---|
| Title of host publication | Optical Trapping and Optical Micromanipulation V |
| DOIs | |
| Publication status | Published - 2008 Nov 21 |
| Event | Optical Trapping and Optical Micromanipulation V - San Diego, CA, United States Duration: 2008 Aug 10 → 2008 Aug 13 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 7038 |
| ISSN (Print) | 0277-786X |
Conference
| Conference | Optical Trapping and Optical Micromanipulation V |
|---|---|
| Country | United States |
| City | San Diego, CA |
| Period | 08/8/10 → 08/8/13 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering
Cite this
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Novel dual beam fiber traps using endlessly single-mode photonic crystal fiber. / Gherardi, David M.; Carruthers, Antonia E.; Čižmár, Tomáš; Marchington, Robert F.; Dholakia, Kishan.
Optical Trapping and Optical Micromanipulation V. 2008. 703828 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7038).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Novel dual beam fiber traps using endlessly single-mode photonic crystal fiber
AU - Gherardi, David M.
AU - Carruthers, Antonia E.
AU - Čižmár, Tomáš
AU - Marchington, Robert F.
AU - Dholakia, Kishan
PY - 2008/11/21
Y1 - 2008/11/21
N2 - The dual beam fiber trap is an important tool in the field of optical micromanipulation. The characteristics of these traps are governed by the fibers used. Photonic crystal fibers have emerged in recent years and may be engineered to have vastly different properties to conventional fibers. In particular, endlessly single-mode photonic crystal fiber (ESM-PCF) will guide any wavelength of light in a single-mode and is commercially available in core diameters up to 35 μm. By utilising these unique properties, we show that it is possible to create novel dual beam ESM-PCF traps for micron size particles. Firstly, we characterise an ESM-PCF trap when using a near-infrared laser coupled into a 25 μm core fiber when trapping a sample in a square capillary. We calculate the trap stiffness for polymer micro-spheres and show that aside from the expected confining potential, it is possible to create line and repulsive potentials. Interference effects due to the capillary are observed. Secondly, we create a dual wavelength standing wave trap which can selectively move two sizes of particles in an optical conveyor belt. Finally, we use a supercontinuum source to create the first white light dual beam fiber trap and show that the low coherence length of the source results in interference free potentials. Overall PCF has great promise for future studies.
AB - The dual beam fiber trap is an important tool in the field of optical micromanipulation. The characteristics of these traps are governed by the fibers used. Photonic crystal fibers have emerged in recent years and may be engineered to have vastly different properties to conventional fibers. In particular, endlessly single-mode photonic crystal fiber (ESM-PCF) will guide any wavelength of light in a single-mode and is commercially available in core diameters up to 35 μm. By utilising these unique properties, we show that it is possible to create novel dual beam ESM-PCF traps for micron size particles. Firstly, we characterise an ESM-PCF trap when using a near-infrared laser coupled into a 25 μm core fiber when trapping a sample in a square capillary. We calculate the trap stiffness for polymer micro-spheres and show that aside from the expected confining potential, it is possible to create line and repulsive potentials. Interference effects due to the capillary are observed. Secondly, we create a dual wavelength standing wave trap which can selectively move two sizes of particles in an optical conveyor belt. Finally, we use a supercontinuum source to create the first white light dual beam fiber trap and show that the low coherence length of the source results in interference free potentials. Overall PCF has great promise for future studies.
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U2 - 10.1117/12.794828
DO - 10.1117/12.794828
M3 - Conference contribution
AN - SCOPUS:56249126002
SN - 9780819472588
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Optical Trapping and Optical Micromanipulation V
ER -