Diffractive Aspheric Lenses

Diffractive Aspheric Lenses are flat optical elements that generate an aspheric wavefront. Such diffractive aspheric lenses serve as null lenses in precision interferometric tests for manufacturing high quality refractive aspheric lenses. They are also used as aspheric elements in optical systems with unique aberration compensation properties.

Beam Splitter

Why make one mark several times, when you can make many marks all at once by using a beam splitter. These diffractive optics split the light path into multiple channels resulting in an increase of efficiency and throughput by a factor of N times. Each new beam is deflected by a precise angle, giving you control over where the light goes. Since this element is a diffractive optic, it performs with high efficiency and no deleterious effects to the input beam characteristics. Many applications can show better results by using multiple beams with given space angles and power ratios.

Diffractive Diffusers

A Diffractive diffuser is a type of diffractive optic that can take a laser beam and redistribute the light into virtually any pattern desired. These types of optics are used when the light source is monochromatic. Diffusers have a tightly controlled angle providing high efficiency. They are not sensitive to alignment and do not affect the polarization of the input beam. Applications like remote sensing and LIDAR/LADAR use diffusers to be able to scan a larger area quickly.

Beam Shaper

Beam shapers transform or shape light into any configuration. These elements are near-field diffractive optics that use a single order so they are entirely free of speckle and can even be re-collimated. Beam shapers take a non-uniform and Gaussian beam with its peak and long tails and turns it into a shape that better suits your application whether it is a uniform top-hat or something more complicated, bringing the power of light to where it is needed. Our high performance beam shapers are designed to create uniform top-hat, circular, linear or rectangular profiles, as well as custom geometries.

Line Generator Optics

Line Generator Optics use a single, flat element to transform a Gaussian beam into a homogenous top-hat line profile. This method offers increased efficiency for any materials processing application such as annealing or re-crystallization of semiconductors or thin layers. Line Generator Optics achieve good uniformity with high efficiency while maintaining high damage threshold. Custom designs are available for UV to NIR wavelengths.

Gaussian Generator Optics

Lasers such as excimer, nitrogen or diode lasers can use diffusers to transform their non-Gaussian laser beams into well-defined, reproducible Gaussian far-field profiles. Together with a focusing lens, a Gaussian spot is generated at the focal plane with a diameter to be calculated as Gaussian divergence times focal length of the lens.

Gratings

The bending of light by gratings is described by the well- known, grating equation:  d(Sin θm (λ) + Sin θi ) = mλ
Gratings can be binary or kiniform structures that control the diffraction angle based on the period. Gratings offer the advantage of being thin, produced in many materials, and can be operated in transmission or reflection modes.

Polarizers

Dielectric Diffractives

Dielectric diffractive polarizers are subwavelength gratings produced through the use of nanolithography. TE illumination results in diffraction of equal amounts into the ±1 orders while TM illumination remains in the zero order. Custom designs are available depending on the wavelength and application.