Dr. Timothy Gerke Profile

Dr. Timothy Gerke

Sr. Sales Manager at NKT Photonics Inc

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 4 February 2012 Paper

Picosecond fiber laser microfabrication of THz wire-grid polarizers on polymer membrane substrates

Tim Gerke, Dylan Fast, Vladimir Kozlov

Proceedings Volume 8243, 824303 (2012) https://doi.org/10.1117/12.904996

KEYWORDS: Terahertz radiation, Metals, Polarizers, Polymers, Picosecond phenomena, Polymer thin films, Thin films, Fiber lasers, Aluminum, Laser ablation

Read Abstract +

Ultrafast picosecond lasers provide the gentle cold ablation required to selectively remove a 400 nm metal film from an unsupported ultra-thin polymer membrane without damaging the membrane substrate. Selected areas of the metal film are completely removed in an ablative lift-off process enabled by a single laser pulse. No damage to the polymer membrane is observed even for samples with the metal completely removed over a 50x50 mm area of the membrane. The 400 nm thick metal films can be patterned into arbitrary forms with feature sizes as small as 10 micrometers, and even submicron features are realistically possible with a modification to the processing system. The skin depth of aluminium in the THz regime is significantly shorter than the 400 nm metal thickness, so thicker metal films that are significantly more difficult to machine are not beneficial. As an example, thin-film wire grid polarizers for the THz regime are demonstrated. The thin-film polarizers are much easier and faster to fabricate than polarizers made by winding free-standing wires around a frame and their performance is very comparable. The thin-film polarizers also have the added benefit of a significantly higher potential for functionality deeper in to the THz spectrum due to their capacity for smaller feature sizes. More intricate patterns, such as meshes, can also be made to create THz bandpass filters. This method can be extended to cold ablation processing of multilayer films fabricated on thin polymer substrates for applications such as plastic electronics, displays and solar cells.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

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

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years