Controlling microparticles through a light field having controllable intensity and periodicity of maxima thereof

• US 9,099,214 B2
• Filed: 12/11/2012
• Issued: 08/04/2015
• Est. Priority Date: 04/19/2011
• Status: Active Grant

• Current Assignee: King Abdullah University of Science and Technology
• Original Assignee: King Abdul AZIZ City For Science and Technology
• Inventors: Mohammed Al-Saud, Turki Saud, Al-Khowaiter, Soliman Hammad, Al-Muhanna, Muhanna Kamal, Solonevich, Sergey, Ryzhevich, Anatol, Kazak, Nikolai
• Primary Examiner(s): Berman, Jack
• Assistant Examiner(s): Stoffa, Wyatt
• Application Number:
  US13/710,490
• Publication Number:
  US 20130099108A1
• Time in Patent Office: 966 Days
• Field of Search: 250/251
• US Class Current: 1/1
• CPC Class Codes: G02B 5/04 Prisms
• CPC Class Codes: G21K 1/006 Manipulation of neutral particles by using radiation pressure, e.g. optical levitation production or acceleration of neutral particles H05H3/00
• CPC Class Codes: G21K 5/04 with beam-forming means

Abstract

A method includes providing a capability to control divergence of a coherent light beam having an axially symmetrical distribution of intensity thereof through an optical divergence controller, and directing an output of the optical divergence controller related to the controlled divergence of the coherent light beam onto a glass prism. The glass prism includes a planar shape onto which a pyramidal structure is formed. The method also includes controlling a distance between maxima of an output light field of the glass prism and intensity thereof through controlling the divergence of the coherent light beam through the optical divergence controller and/or varying a distance between the optical divergence controller and the glass prism, and utilizing the output light field of the glass prism in controlling microparticles in a microtechnology or a nanotechnology application.

Claims

1. An optical device comprising:

a laser source;

a telescope collimator in an optical path immediately following the laser source to form a collimated coherent light beam having an axially symmetrical distribution of intensity thereof;

an optical divergence controller in an optical path immediately following the telescope collimator to provide a capability to control divergence of the collimated coherent light beam; and

a glass prism including a planar shape onto which a pyramidal structure is formed, the glass prism being positioned in an optical path immediately following the optical divergence controller such that an output of the optical divergence controller is incident on one of a planar surface of the planar shape and the pyramidal structure,

wherein at least one of;

controlling the divergence of the collimated coherent light beam through the optical divergence controller and varying a distance between the optical divergence controller and the glass prism enables controlling a distance between maxima of an output light field of the glass prism and intensity thereof,

wherein the output light field of the glass prism is configured to be utilized in controlling microparticles in one of a microtechnology and a nanotechnology application, the microparticles being configured to be placed as part of a sample within a sample holder in an optical path immediately following the glass prism.

2. The optical device of claim 1, wherein the optical divergence controller is a spherical lens with varying focal distance.

3. The optical device of claim 1, further comprising at least one of a microscope and a CCD camera to at least one of observe, register and investigate the output light field of the glass prism.

4. The optical device of claim 1, wherein the output light field of the glass prism is configured to be utilized to allow for dosated laser influence on ensembles of the microparticles.

5. An optical system comprising:

a laser source;

a telescope collimator in an optical path immediately following the laser source to form a collimated coherent light beam having an axially symmetrical distribution of intensity thereof;

an optical divergence controller in an optical path immediately following the telescope collimator to provide a capability to control divergence of the collimated coherent light beam;

a glass prism including a planar shape onto which a pyramidal structure is formed, the glass prism being positioned in an optical path immediately following the optical divergence controller such that an output of the optical divergence controller is incident on one of a planar surface of the planar shape and the pyramidal structure; and

an ensemble of microparticles as part of a sample within a sample holder in an optical path immediately following the glass prism,

wherein at least one of;

controlling the divergence of the collimated coherent light beam through the optical divergence controller and varying a distance between the optical divergence controller and the glass prism enables controlling a distance between maxima of an output light field of the glass prism and intensity thereof, and

wherein the output light field of the glass prism is configured to be utilized in controlling the ensemble of microparticles.

6. The optical system of claim 5, wherein the optical divergence controller is a spherical lens with varying focal distance.

7. The optical system of claim 5, further comprising at least one of a microscope and a CCD camera to at least one of observe, register and investigate the output light field of the glass prism.