INAOE | Optics | Laboratories | Diffractive Optics

Diffractive Optics Lab

Lab facilities include basic equipment to carry out the Diffractive Optics Group’s tasks and research projects. Among general use equipment, this lab has a holographic table and an optic bench for the development of different experiments and prototypes in diffractive optics and digital holography. This lab also has specialized equipment such as: six liquid crystal modulators (nematic type) in various formats and pixel count. In three of these modulators, liquid crystal molecules have induced azimuthal rotation and in all three, molecules are parallel aligned.

Modulators that are used most in our current projects in the Diffractive Optics Group, are parallel aligned molecule modulators. These devices’ main quality is that they allow the modulation of only one phase of an optic field, without altering that field’s amplitude. This characteristic is very favorable in carrying out diffractive optic elements and high efficiency holograms.

Two of the modulators allow a range modulation phase of approximately 3 pi radians for wave lengths within the visible spectrum. They are applied, for example, in the use of optic tweezers for the manipulation of inert particles. On the other hand, one of the modulators helps reach a range higher than 2 pi radians for an infrared light of 1064 nanometers. Using an infrared light, this modulator permits the production of structured fields and optical tweezers for the manipulation of biological samples.

Just recently developed, is a line of research that combines the use of Diffractive and Holographic Optics with Nonlinear Optics. Specifically, liquid crystal modulators are used to generate structured optic fields as an access in different non linear settings. Some of our planned tasks are to: develop guides and optical solitons, blend 2 and four beams in which one or more of these beams may have a complex arbitrary structure (optical vortexes, Bessel beams, non diffractive and Laguerre-Gauss beams, etc.)

Person in charge of the lab: Ph.D. Victor Arrizon


Last Update:
17-11-2008 a las 19:00 by

Address: Luis Enrique Erro # 1, Tonantzintla, Puebla, Mexico | Tel: (222) 247.29.40 | Contact: | Fax: 247.29.40


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