Diffractive Optical Elements (DOE) Diffusers

II-VI provides Diffractive Optical Elements (DOEs) for demanding industrial and consumer applications. DOEs are lithographically patterned and offer complete phase control of transmitted light without limitations imposed by refractive optics. A micron-thick active phase-transforming layer is directly etched into chemically inert dielectrics on robust fused silica substrate. An organics-free material platform is characterized by excellent reliability and can withstand harsh environmental conditions, high optical power and temperatures up to 500°C. II-VI DOEs undergo extensive quality assurance, have a proven reliability track record and are competitively priced.
Fabrication is based on robust deep ultraviolet (DUV) photolithography and a reactive ion etch process. Wafer-scale DOE optics are mass-produced using robust volume fabrication methods of the electronic IC industry and is easily scalable to multiple millions of micro-optical devices per year.

Key Features:

  • Designed for good transmissivity and uniformity
  • Uniform illumination – even in the corners
  • Designed to reduce speckle noise
  • Customizable design of power vs deflection angle
  • Stock designs are optimized for II-VI VCSEL arrays
  • Micron-scale active layer thickness
  • Etched directly into robust fused silica substrate and chemically inert dielectrics, no organics or polymers
  • Wafer-scale mass production
  • Withstand temperatures up to 500°C
  • High power handling up to 125 GW/cm2
  • Excellent long-term reliability

Applications:

  • Illuminators for Time-of-Flight 3D sensing (cell phones, consume electronics, autonomous vehicles)
  • Flood illuminators for 2D sensing
  • High power beam homogenizer (laser machining)

Diffractive Optical Elements (DOE) Diffusers

Download

 

Share This