Spatial Pattern Separation of Chemicals and Frequency-Independent Components by Terahertz Spectroscopic Imaging
Applied Optics, Vol. 42, Issue 28, pp. 5744-5748 (2003)
http://dx.doi.org/10.1364/AO.42.005744
Acrobat PDF (370 KB)
Abstract
We separated the component spatial patterns of frequency-dependent absorption in chemicals and frequency-independent components such as plastic, paper, and measurement noise in terahertz (THz) spectroscopic images, using known spectral curves. Our measurement system, which uses a widely tunable coherent THz-wave parametric oscillator source, can image at a specific frequency in the range 1–2 THz. The component patterns of chemicals can easily be extracted by use of the frequency-independent components. This method could be successfully used for nondestructive inspection for the detection of illegal drugs and devices of bioterrorism concealed, e.g., inside mail and packages.
© 2003 Optical Society of America
OCIS Codes
(110.3080) Imaging systems : Infrared imaging
(260.3090) Physical optics : Infrared, far
(300.6270) Spectroscopy : Spectroscopy, far infrared
Citation
Yuuki Watanabe, Kodo Kawase, Tomofumi Ikari, Hiromasa Ito, Youichi Ishikawa, and Hiroaki Minamide, "Spatial Pattern Separation of Chemicals and Frequency-Independent Components by Terahertz Spectroscopic Imaging," Appl. Opt. 42, 5744-5748 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-28-5744
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
Related Journal Articles 
- Conductivity artifacts in optical-pump THz-probe measurements of YBa2Cu3O7 (JOSAB)
- Time-domain transillumination of biological tissues with terahertz pulses (OL)
- Two-color facility based on a broadly tunable infrared free-electron laser and a subpicosecond-synchronized 10-fs-Ti:sapphire laser (OL)
- Terahertz dark-field imaging of biomedical tissue (OE)
- Grating-Assisted Coupling of Terahertz Waves into a Dielectric Waveguide Studied by Terahertz Time-Domain Spectroscopy (AO)
« Previous Article | Next Article »
OSA is a member of 