Multi-segment tapered optical mirror for MEMS LiDAR application

Mostafa Abdelsalam; Yasser Sabry; Mazen Erfan; Diaa Khalil

doi:10.1117/12.2251330

24 February 2017 Multi-segment tapered optical mirror for MEMS LiDAR application

Mostafa Abdelsalam, Yasser Sabry, Mazen Erfan, Diaa Khalil

Proceedings Volume 10096, Free-Space Laser Communication and Atmospheric Propagation XXIX; 100960O (2017) https://doi.org/10.1117/12.2251330
Event: SPIE LASE, 2017, San Francisco, California, United States

Abstract

In this work, we present a novel and simple optical solution for MEMS LiDARs. The idea is based on increasing the collection optics throughput by removing the MEMS mirror from the path of the collected light, while inserting a multi-segment tapered structure to collect the light from a wide angle. The tapered also converts the large size optical spot captured to a small area compatible with the requirement of low detector noise dimensions. The expected improvement in the collected power is analyzed versus the tapering angle of a single tapered structure. A multi-segment optical system, or multiple tapered structure arranged in parallel, is also introduced allowing for the optimization of the acceptance angle and the power improvement ratio. Using a 3-segment mirror, the expected improvement is about 15x with an acceptance angle of ±30 degrees. The design of a single element taper section is fabricated using aluminum-coated acrylic and tested experimentally showing an improvement of about 7x in the coupled power through an angle of ±10 degrees in good agreement with the theoretical expectations.

Conference Presentation

Citation Download Citation

Mostafa Abdelsalam, Yasser Sabry, Mazen Erfan, and Diaa Khalil "Multi-segment tapered optical mirror for MEMS LiDAR application", Proc. SPIE 10096, Free-Space Laser Communication and Atmospheric Propagation XXIX, 100960O (24 February 2017); https://doi.org/10.1117/12.2251330

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available