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Diffractive Optical Element (DOE) Design and Fabrication Services

The Centre for Promotion of Additive Manufacturing – Optical Computation Chips (CPAM OCC), IISc Bangalore offers comprehensive Diffractive Optical Element (DOE) design, optimization, prototyping, and fabrication services for applications in laser beam shaping, imaging, sensing, lithography, biomedical optics, defense, and optical communications. Our expertise spans conventional diffractive optics, computer-generated holography, and advanced metasurface-based flat optics.

​Our Services:

  • DOE Design

  • Beam shaping optics

  • Beam splitters (1D and 2D arrays)

  • Diffusers

  • Fresnel lenses

  • Fresnel zone plates

  • Axicons

  • Spiral phase plates

  • Vortex beam generators

  • Optical vortex generators

  • Dammann gratings

  • ​Beam steering metasurfaces

  • Binary and multilevel phase gratings

  • Blazed gratings

  • Computer-generated holograms (CGH)

  • Fourier holograms

  • Diffractive microlens arrays

  • Advanced Flat Optics

  • Metalenses

  • Achromatic metalenses

  • Multiwavelength and RGB metalenses

  • Polarization-selective metasurfaces

  • Geometric phase (Pancharatnam–Berry) elements​

  • Meta-holograms

  • Multifunctional flat optical components

  • Design and Optimization

  • Scalar and vector diffraction modeling

  • Rigorous Coupled-Wave Analysis (RCWA)

  • Finite-Difference Time-Domain (FDTD) simulations

  • Finite Element Method (FEM) analysis

  • Fourier optics-based optimization

  • Inverse design and topology optimization

  • Fabrication-tolerant optimization

  • Multi-objective performance optimization

  • Fabrication Services

CPAM OCC supports prototype fabrication using advanced micro- and nanofabrication technologies, including:

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  • ​Direct laser writing (DLW)

  • Projection lithography

  • Electron beam lithography (EBL) support

  • Nanoimprint lithography (NIL) master fabrication

  • Photolithography

  • High-resolution additive manufacturing for micro-optics

  • Characterization

  • Beam profile measurements

  • Diffraction efficiency analysis

  • Wavefront characterization

  • Focal spot measurements

  • Modulation transfer function (MTF)

  • Spectral performance evaluation

  • Polarization characterization

  • Laser damage threshold testing (where applicable)

  • Application Areas

  • Laser beam shaping

  • Optical communications

  • Biomedical imaging

  • Optical trapping and manipulation

  • LiDAR and 3D sensing

  • AR/VR optics

  • Semiconductor lithography

  • Machine vision

  • Industrial laser processing

  • Optical encryption and security

  • Quantum photonics

  • Astronomical instrumentation

  • Deliverables

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