Fast generation of holographic optical tweezers by random mask encoding of Fourier components

Author(s): Mario Montes-Usategui, Encarnación Pleguezuelos, Jordi Andilla, and Estela Martín-Badosa

Abstract:

“The random mask encoding technique of multiplexing phase-only filters can be easily adapted to the generation of holographic optical tweezers. The result is a direct, non-iterative and extremely fast algorithm that can be used for computing arbitrary arrays of optical traps. Additional benefits include the possibility of modifying any existing hologram to quickly add more trapping sites and the inexistence of ghost traps or replicas.”

Link to Publications Page

Publication: Optics Express
Issue/Year: Optics Express, Vol. 14, Issue 6, pp. 2101-2107, 2006
DOI: 10.1364/OE.14.002101

Highly efficient phase-conjugation of a 1 µm pico-second Laguerre-Gaussian beam

Author(s): Gyeong Bok Jung, Keiichiro Kanaya, and Takashige Omatsu

Abstract:

“We have demonstrated highly efficient Laguerre Gaussian beam generation by using a ring self-pumped phase conjugate mirror in the pico-second regime for the first time. The phase conjugate reflectivity was typically ~55%. We have also investigated the conservation of optical angular momentum.”

Link to Publications Page

Publication: Optics Express
Issue/Year: Optics Express, Vol. 14, Issue 6, pp. 2250-2255, 2006
DOI: 10.1364/OE.14.002250