Limits...
Generating optical superimposed vortex beam with tunable orbital angular momentum using integrated devices.

Wang Y, Feng X, Zhang D, Zhao P, Li X, Cui K, Liu F, Huang Y - Sci Rep (2015)

Bottom Line: To verify the operating principle, the proposed device has been fabricated on the SOI substrate and experimentally measured.Moreover, the ability of independently varying the OAM flux and the geometric distribution of intensity is illustrated and discussed with numerical simulation.We believe that this work would be promising in various applications.

View Article: PubMed Central - PubMed

Affiliation: Department of Electronic Engineering, Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, Beijing, China.

ABSTRACT
An integrated device, which consists of a variable amplitude splitter and an orbital angular momentum (OAM) emitter, is proposed for the superposition of optical vortex beams. With fixed wavelength and power of incident beam, the OAM of the radiated optical superimposed vortex beam can be dynamically tuned. To verify the operating principle, the proposed device has been fabricated on the SOI substrate and experimentally measured. The experimental results confirm the tunability of superimposed vortex beams. Moreover, the ability of independently varying the OAM flux and the geometric distribution of intensity is illustrated and discussed with numerical simulation. We believe that this work would be promising in various applications.

No MeSH data available.


The normalized OAM fluxMr,l/Mr = 1,l = 7 is tunable by varying r, with l = 3, 5, and 7 respectively.Different l corresponds to different beam radius ρ, i.e., different geometric distribution of intensity. With l = 3, 5, and 7, the numerical results are shown by discrete hollow circles, solid squares, and solid circles, meanwhile the predictions are shown by the solid, dotted, and dashed lines, respectively.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4507141&req=5

f8: The normalized OAM fluxMr,l/Mr = 1,l = 7 is tunable by varying r, with l = 3, 5, and 7 respectively.Different l corresponds to different beam radius ρ, i.e., different geometric distribution of intensity. With l = 3, 5, and 7, the numerical results are shown by discrete hollow circles, solid squares, and solid circles, meanwhile the predictions are shown by the solid, dotted, and dashed lines, respectively.

Mentions: For certain power of incident beam, the calculated OAM flux is normalized as Mr,l/Mr = 1,l = −7 to describe the evolution of OAM with varied r and l. As a concrete example, r = ±1, ±0.5, ±0.2,0 and l = 7 are firstly considered. The numerical results on the basis of equation (8) are shown by the discrete solid circles in Fig. 8. Meanwhile, according to equation (7), the normalized OAM flux with l = 7 could be deduced as:


Generating optical superimposed vortex beam with tunable orbital angular momentum using integrated devices.

Wang Y, Feng X, Zhang D, Zhao P, Li X, Cui K, Liu F, Huang Y - Sci Rep (2015)

The normalized OAM fluxMr,l/Mr = 1,l = 7 is tunable by varying r, with l = 3, 5, and 7 respectively.Different l corresponds to different beam radius ρ, i.e., different geometric distribution of intensity. With l = 3, 5, and 7, the numerical results are shown by discrete hollow circles, solid squares, and solid circles, meanwhile the predictions are shown by the solid, dotted, and dashed lines, respectively.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4507141&req=5

f8: The normalized OAM fluxMr,l/Mr = 1,l = 7 is tunable by varying r, with l = 3, 5, and 7 respectively.Different l corresponds to different beam radius ρ, i.e., different geometric distribution of intensity. With l = 3, 5, and 7, the numerical results are shown by discrete hollow circles, solid squares, and solid circles, meanwhile the predictions are shown by the solid, dotted, and dashed lines, respectively.
Mentions: For certain power of incident beam, the calculated OAM flux is normalized as Mr,l/Mr = 1,l = −7 to describe the evolution of OAM with varied r and l. As a concrete example, r = ±1, ±0.5, ±0.2,0 and l = 7 are firstly considered. The numerical results on the basis of equation (8) are shown by the discrete solid circles in Fig. 8. Meanwhile, according to equation (7), the normalized OAM flux with l = 7 could be deduced as:

Bottom Line: To verify the operating principle, the proposed device has been fabricated on the SOI substrate and experimentally measured.Moreover, the ability of independently varying the OAM flux and the geometric distribution of intensity is illustrated and discussed with numerical simulation.We believe that this work would be promising in various applications.

View Article: PubMed Central - PubMed

Affiliation: Department of Electronic Engineering, Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, Beijing, China.

ABSTRACT
An integrated device, which consists of a variable amplitude splitter and an orbital angular momentum (OAM) emitter, is proposed for the superposition of optical vortex beams. With fixed wavelength and power of incident beam, the OAM of the radiated optical superimposed vortex beam can be dynamically tuned. To verify the operating principle, the proposed device has been fabricated on the SOI substrate and experimentally measured. The experimental results confirm the tunability of superimposed vortex beams. Moreover, the ability of independently varying the OAM flux and the geometric distribution of intensity is illustrated and discussed with numerical simulation. We believe that this work would be promising in various applications.

No MeSH data available.