Sub-millimeter resolution laser ranging at 9.3 kilometers using temporally stretched frequency chirped pulses from a mode-locked laser

Mohammad Umar Piracha; Dat Nguyen; Dimitrios Mandridis; Tolga Yilmaz; David Gaudiosi; Peter J. Delfyett

doi:10.1117/12.820761

28 April 2009 Sub-millimeter resolution laser ranging at 9.3 kilometers using temporally stretched frequency chirped pulses from a mode-locked laser

Mohammad Umar Piracha, Dat Nguyen, Dimitrios Mandridis, Tolga Yilmaz, David Gaudiosi, Peter J. Delfyett

Author Affiliations +

Proceedings Volume 7339, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications V; 73390I (2009) https://doi.org/10.1117/12.820761
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

A chirped fiber Bragg grating with a dispersion of 1651ps/nm is used to generate temporally stretched, frequency chirped pulses from a passively mode locked fiber laser that generates pulses of ~1ps (FWHM) duration at a repetition rate of 20MHz with 3.5mW average power (peak power of 175W). The use of a chirped fiber Bragg grating enables the generation of temporally stretched pulses with low peak power so that non-linear effects in the fiber can be avoided. A fiber based interferometeric arrangement is used for interfering a reference signal with the reflected signal from the target to realize a coherent heterodyne detection scheme. In the RF domain, the detected heterodyne beat frequency shifts as the target distance is changed. A round trip target distance of 14km in air is simulated using 9.3km of optical fiber and a resolution of less than a millimeter is observed.

Citation Download Citation

Mohammad Umar Piracha, Dat Nguyen, Dimitrios Mandridis, Tolga Yilmaz, David Gaudiosi, and Peter J. Delfyett "Sub-millimeter resolution laser ranging at 9.3 kilometers using temporally stretched frequency chirped pulses from a mode-locked laser", Proc. SPIE 7339, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications V, 73390I (28 April 2009); https://doi.org/10.1117/12.820761

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