Broadband true time-delay with optical coherent transients

Author

Mingzhen Tian ; Reibel, R. ; Babbitt, Wm Randall

Author_Institution

Dept. of Phys., Montana State Univ., Bozeman, MT, USA

fYear

2001

fDate

11-11 May 2001

Firstpage

371

Lastpage

372

Abstract

Summary form only given. When phased array antenna systems operate with broadband (multiple gigahertz) signals, true time-delay devices are needed to solve the problem of beam squint. Optical coherent transient technology, also known as spatial-spectral holography, offers a unique way of using the space and frequency dimensions of inhomogeneously broadened absorbers to handle thousands of high-resolution delays in a compact volume. We demonstrated broadband true-time delay in a Tm/sup 3+/:YAG crystal, which offers delays up to a microsecond on signals having several tens of GHz bandwidth with sub-picosecond delay resolution.

Keywords

antenna phased arrays; delays; holography; optical coherent transients; optical materials; thulium; GHz bandwidth; Tm/sup 3+/:YAG crystal; YAG:Tm; YAl5O12:Tm; beam squint; broadband signals; broadband true time-delay; broadband true-time delay; compact volume; frequency dimensions; high-resolution delays; inhomogeneously broadened absorbers; multiple gigahertz signals; optical coherent transient technology; optical coherent transients; phased array antenna systems; space dimensions; spatial-spectral holography; time-delay devices; Antenna arrays; Bandwidth; Broadband antennas; Delay; Frequency; Holographic optical components; Holography; Phased arrays; Signal resolution; Space technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2001. CLEO '01. Technical Digest. Summaries of papers presented at the Conference on

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-662-1

Type

conf

DOI

10.1109/CLEO.2001.947934

Filename

947934