Mr. Tamaki Ideno Profile

Tamaki Ideno

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 | 22 May 2023 Poster + Paper

Real-time laser shape measurement using intensity correlation with phase modulation signal

Kengo Kumano, Tamaki Ideno, Yoshihiro Endo, Yosuke Tanaka

Proceedings Volume 12327, 123271T (2023) https://doi.org/10.1117/12.2666813

KEYWORDS: Signal intensity, Phase modulation, Laser beam diagnostics, Laser systems engineering, Signal detection, Modulation frequency

Read Abstract +

Application of laser displacement measurement is expected in various fields such as manufacturing, medical care, and inter-vehicle distance measurement. In this paper, we demonstrate real-time shape measurement using a laser displacement measurement system based on intensity correlation with phase modulation signals, which we have been studying for years. The intensity-correlation-based laser displacement measurement system measures the intensity correlation between the probe light signal and the phase-modulated electrical reference signal by using an optical modulator. The displacement of an object is measured in real time from a simple calculation using the fundamental and second harmonic frequency components of the intensity correlation signal. The measurement range can be freely adjusted by the modulation frequency applied to the probe and local light. In the previous study, we also developed a method to extend the measurement range without deteriorating the measurement accuracy. Furthermore, the proposed system does not need sophisticated highfrequency circuits, because multiplication operation necessary for intensity correlation measurement is performed optically by using an optical modulator. In this study, we have developed an experimental setup for scanning the probe laser beam on the sample and combined it with the laser displacement measurement system. In the experiment, we used a sample with a stepwise profile composed of aluminum mirrors and successfully measured the shape of flat surfaces and steps within an error range of the order of 10^-5 m.

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