Please use this identifier to cite or link to this item:
http://hdl.handle.net/2289/6772| Title: | Fabrication of micro-optical components using femtosecond oscillator pulses |
| Authors: | Rodrigues, Vanessa R.M. Ramachandran, Hema Chidangil, Santhosh Mathur, Deepak |
| Keywords: | laser direct wirting diffractive optics micromachining |
| Issue Date: | Jun-2017 |
| Publisher: | SPIE - Society of Photo-Optical Instrumentation Engineers (SPIE) |
| Citation: | Proceedings of the SPIE Vol. 10449, p104492V, 2017 , Proceedings of Fifth International Conference on Optical and Photonics Engineering, 4-7 April 2017, Singapore, Edited by Anand Krishna Asundi |
| Abstract: | With a penchant for integrated photonics and miniaturization, the fabrication of micron sized optical elements using precision laser pulse management is drawing attention due to the possibility of minimizing tolerances for collateral material damage. The work presented here deals with the design, fabrication and characterization of a range of diffractive optics - gratings, grids and Fresnel zone plates – on transparent and metallic samples. Their low volume, light weight, transmission bandwidth, high damage threshold and flexible design make them suited for replacing conventional refractive optical elements. Our one-step, mask-less, 3-D laser direct writing process is a green fabrication technique which is in stark contrast to currently popular Photo-lithography based micro-structuring. Our method provides scope for modifications on the surface as well as within the bulk of the material. The mechanism involved in the fabrication of these optics on transparent and thin metallic substrates differ from each other. Our studies show that both amplitude and phase versions of micro-structures were achieved successfully with performances bearing ~98% accuracy vis-a-vis theoretical expectations. |
| Description: | Restricted Access. |
| URI: | http://hdl.handle.net/2289/6772 |
| Alternative Location: | http://dx.doi.org/10.1117/12.2270898 |
| Copyright: | 2017 Society of Photo-Optical Instrumentation Engineers (SPIE) |
| Appears in Collections: | Research Papers (LAMP) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2017_SPIE_10449_V1.pdf Restricted Access | Restriced Access | 2.95 MB | Adobe PDF | View/Open Request a copy |
Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.