Optomechanical choppers with conical shafts: A finite element analysis

Eduard-Sebastian Csukas; Dorin Demian; Virgil-Florin Duma

doi:10.1117/12.2526525

10 October 2019 Optomechanical choppers with conical shafts: A finite element analysis

Eduard-Sebastian Csukas, Dorin Demian, Virgil-Florin Duma

Proceedings Volume 11151, Sensors, Systems, and Next-Generation Satellites XXIII; 1115122 (2019) https://doi.org/10.1117/12.2526525
Event: SPIE Remote Sensing, 2019, Strasbourg, France

Abstract

Optical choppers are common components utilized in a wide variety of systems, for the modulation of light, including for generating controlled laser impulses, of as high as possible frequencies and with certain (required) profiles. Classical choppers have rotational disks, but such configurations are limited in terms of chop frequencies to 10 kHz, although issues already appear from around 3 kHz. Solutions to overcome this drawback include the development of Micro-Electro-Mechanical Systems (MEMS) or of macro-choppers with rotational shafts. To our knowledge, we have introduced the latter solution (patent pending). Our previous studies on choppers with cylindrical and spherical shafts are briefly pointed out in this work, while we approach a third possible solution, of choppers with conical shafts. Optomechanical aspects are discussed, performing the Finite Element Analysis (FEA) of the rotational shafts, for a certain range of constructive parameters, and for rotational speeds of up to 60 krpm. The possible limits of the rotational speed at which choppers with such conical shafts are obtained–from the point of view of their structural integrity and level of deformations.

Citation Download Citation

Eduard-Sebastian Csukas, Dorin Demian, and Virgil-Florin Duma "Optomechanical choppers with conical shafts: A finite element analysis", Proc. SPIE 11151, Sensors, Systems, and Next-Generation Satellites XXIII, 1115122 (10 October 2019); https://doi.org/10.1117/12.2526525

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