These elements include:

• Focusators - optical elements combining the functions of multiple optical elements in one, also known as beam shaping elements
• Gratings of various pitch, size, and groove profiles
• Artificial refractive index gratings and elements
• Holographic images
• Wavefront correctors and transformers
• Planar optical circuits
• Microoptics for fibers

We design optical elements and develop their fabrication technique in house, then rent clean room equipment or work closely with foundries to fabricate a prototype of the element. Volume manufacturing is also available.

Because every application is unique, we do not sell elements from stock, but rather design and fabricate elements according to their required specifications.

Examples

Optical element for ophthalmology

This optical element focuses a laser light into a narrow ring. A part of the element is shown in the figure. An alternative, traditional way of focusing the beam into a ring is to use a combination of an axicon and a lens; however, a bright spot appears in the middle of the ring due to physics. Our focusator did not have this problem.

Optical element for laser welding

Laser welding is a well-established technique used in manufacturing. However, it is a big problem to weld two materials with different melting points. Our focusator makes this process possible. This optical element focuses a continuous CO2 laser beam of a few KW into two points with the required intensity distribution. Placing these two beams at the edges of the two materials assures that both materials reach their respective melting temperatures simultaneously.

Because of the high power of the focused laser beam, an element of copper with external water cooling was made.

A similar element working in the transmission mode was made of quartz to be used with a Nd:YAG laser.

Artificial refractive index cylindrical lens.

This is planar lens with a specially designed grating on the quartz surface. Because the zone size is smaller than the wavelength, this relief appears as a media with artificially designed refractive index.

The lens looks like a Fresnel zone plate (a), also if have a closer look into a few zones (b). However, this is a totally different principle; a binary relief is used as can be seen on a part within a single zone (c).