Ms. Marie Roudot Profile

Marie Roudot

at CEA-Gramat

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 | 3 March 2022 Presentation + Paper

532-nm triature Photonic Doppler Velocimetry

G. Le Blanc, S. Bergey, J. Vich, T. d'Almeida, M. Roudot, J. Luc, Y. Barbarin

Proceedings Volume 12016, 120160X (2022) https://doi.org/10.1117/12.2616569

KEYWORDS: High speed photonics, Homodyne detection, Signal processing, Heterodyning, Doppler effect, Optical fibers, Velocimetry

Read Abstract +

Photonic Doppler Velocimetry (PDV) systems are developed to measure velocities in physics experiments such as ramp compression experiment on novel materials. Better time resolution, in the fast acceleration phase, is required when the velocity reached is limited to few tens of m/s. This resolution being proportional to the wavelength, a green PDV system provides a factor 3 gain compared to a telecom based PDV. Furthermore, a Triature design allows to further increase the time resolution thanks to the phases signal processing. A 532-nm Triature PDV system was realized with singlemode fibers (4.5 µm core diameter) and compared to three standard PDV systems in reproducible ramp compression experiments. To minimize the optical losses, most of the fibers components were fused. The velocity profile measured has oscillations between 0 and 10 m/s. The first velocity peak is reached in 1.0 µs. The 1550-nm homodyne PDV system provides only 6 fringes and it clearly limits the time resolution. The 1550-nm heterodyne PDV system provides hundreds of fringes but variations of about 0.1 m/s are observed. The green homodyne PDV system provides almost the correct velocity profile by Short Time Fourier Transform. The 250-ns long acceleration phase is better resolved applying a signal processing with at least two phases.

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