Radiation pressure on bi-grating and axicon diffractive beam-riding light sails

Ying-Ju Lucy Chu; Prateek R. Srivastava; Monjurul Meem; Rajesh Menon; Nelson Tabiryan; Grover A Swartzlander Jr.

doi:10.1117/12.2594349

3 August 2021 Radiation pressure on bi-grating and axicon diffractive beam-riding light sails

Ying-Ju Lucy Chu, Prateek R. Srivastava, Monjurul Meem, Rajesh Menon, Nelson Tabiryan, Grover A Swartzlander Jr.

Author Affiliations +

Proceedings Volume 11798, Optical Trapping and Optical Micromanipulation XVIII; 117980Z (2021) https://doi.org/10.1117/12.2594349
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Abstract

Experimental measurements related to the opto-mechanical stability of thin film diffractive beam-riders are discussed. Our theoretical predictions of radiation pressure forces indicate that these structures allow a perturbed laser-driven light sail to remain in the beam path. Radiation pressure forces of both a liquid crystal polymer bi-grating and an etched photoresist axicon diffraction grating will be described. Our experiments made use of a vacuum torsion oscillator having sub-nano-Newton sensitivity. The parametric damping of both systems will also be described. Our measurements validate the technical feasibility of a laser-driven light sail based on diffractive thin films.

Conference Presentation

Citation Download Citation

Ying-Ju Lucy Chu, Prateek R. Srivastava, Monjurul Meem, Rajesh Menon, Nelson Tabiryan, and Grover A Swartzlander Jr. "Radiation pressure on bi-grating and axicon diffractive beam-riding light sails", Proc. SPIE 11798, Optical Trapping and Optical Micromanipulation XVIII, 117980Z (3 August 2021); https://doi.org/10.1117/12.2594349

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