Abstract
Optical vortex is a type of structured beam with helical phase wavefronts that carry orbital-angular momentum (OAM) with different topological charge numbers. Optical vortex beams are of use in a wide range of areas ranging from communications to biomedical applications. In this letter, we demonstrate that microscale polymer spiral phase plates (SPPs) with different topological charges can be fabricated through two-photon polymerization by femtosecond 3D direct laser writing. These micro-optical SPPs can modify input light beams carrying no OAM into optical vortex beams carrying an OAM of lh per photon. Intensity patterns and interferograms of the vortex beams are experimentally obtained, showing good agreement with numerical simulations. The two-photon direct laser writing technique with a high resolution of 100 nm enables easy fabrication of micro-optic devices such as SPPs with broad applications in mesoscale photonic devices.
| Original language | English (US) |
|---|---|
| Article number | 8660645 |
| Pages (from-to) | 599-602 |
| Number of pages | 4 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 31 |
| Issue number | 8 |
| DOIs | |
| State | Published - Apr 15 2019 |
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Keywords
- Optical vortices
- micro-optics
- spiral phase plate
- three-dimensional lithography
- two-photon polymerization
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering
Cite this
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3D Printing of Micro-Optic Spiral Phase Plates for the Generation of Optical Vortex Beams. / Wei, Heming; Amrithanath, Abhishek K.; Krishnaswamy, Sridhar.
In: IEEE Photonics Technology Letters, Vol. 31, No. 8, 8660645, 15.04.2019, p. 599-602.Research output: Contribution to journal › Article
TY - JOUR
T1 - 3D Printing of Micro-Optic Spiral Phase Plates for the Generation of Optical Vortex Beams
AU - Wei, Heming
AU - Amrithanath, Abhishek K.
AU - Krishnaswamy, Sridhar
PY - 2019/4/15
Y1 - 2019/4/15
N2 - Optical vortex is a type of structured beam with helical phase wavefronts that carry orbital-angular momentum (OAM) with different topological charge numbers. Optical vortex beams are of use in a wide range of areas ranging from communications to biomedical applications. In this letter, we demonstrate that microscale polymer spiral phase plates (SPPs) with different topological charges can be fabricated through two-photon polymerization by femtosecond 3D direct laser writing. These micro-optical SPPs can modify input light beams carrying no OAM into optical vortex beams carrying an OAM of lh per photon. Intensity patterns and interferograms of the vortex beams are experimentally obtained, showing good agreement with numerical simulations. The two-photon direct laser writing technique with a high resolution of 100 nm enables easy fabrication of micro-optic devices such as SPPs with broad applications in mesoscale photonic devices.
AB - Optical vortex is a type of structured beam with helical phase wavefronts that carry orbital-angular momentum (OAM) with different topological charge numbers. Optical vortex beams are of use in a wide range of areas ranging from communications to biomedical applications. In this letter, we demonstrate that microscale polymer spiral phase plates (SPPs) with different topological charges can be fabricated through two-photon polymerization by femtosecond 3D direct laser writing. These micro-optical SPPs can modify input light beams carrying no OAM into optical vortex beams carrying an OAM of lh per photon. Intensity patterns and interferograms of the vortex beams are experimentally obtained, showing good agreement with numerical simulations. The two-photon direct laser writing technique with a high resolution of 100 nm enables easy fabrication of micro-optic devices such as SPPs with broad applications in mesoscale photonic devices.
KW - Optical vortices
KW - micro-optics
KW - spiral phase plate
KW - three-dimensional lithography
KW - two-photon polymerization
UR - http://www.scopus.com/inward/record.url?scp=85063873436&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85063873436&partnerID=8YFLogxK
U2 - 10.1109/LPT.2019.2903151
DO - 10.1109/LPT.2019.2903151
M3 - Article
VL - 31
SP - 599
EP - 602
JO - IEEE Photonics Technology Letters
JF - IEEE Photonics Technology Letters
SN - 1041-1135
IS - 8
M1 - 8660645
ER -