Abstract

We report new results related to imaging using broadband Bessel-like beams at the terahertz (THz) domain that were generated by use of axicons and pulsed THz radiation emitting at a bandwidth 0.1 to 1 THz. Such Bessel-like beams exhibit an invariant line of focus with an extended length compared to Gaussian-beams Rayleigh range, which enables imaging through the extended length. We demonstrate this imaging property using a resolution target illuminated by broadband-THz beams and show an improvement by a factor of 3.5 in imaging depth while using Bessel-like beams over Gaussian beams. Our results highlight the potential in using broadband THz radiation together with nondiffractive Bessel beams to significantly improve spatial separation over deep view.

© 2012 Optical Society of America

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2012 (1)

2011 (1)

Z. Zhang and T. Buma, Proc. SPIE 7938, 793806 (2011).
[CrossRef]

2010 (1)

J. Liu, L. Wang, J. Li, W. Wang, and Z. Hong, Proc. SPIE 7854, 7854Z-1 (2010).
[CrossRef]

2009 (3)

2007 (2)

I. Pupeza, R. Wilk, and M. Koch, Opt. Express 15, 4335 (2007).
[CrossRef]

W. L. Chan, J. Deibel, and D. M. Mittleman, Rep. Prog. Phys. 70, 1325 (2007).
[CrossRef]

2006 (1)

Y.-S. Jim, G.-J. Kim, and S.-G. Jeon, J. Korean Phys. Soc. 49, 513 (2006).

2005 (1)

2003 (1)

J. Lloyd, K. Wang, A. Barkan, and D. M. Mittleman, Opt. Commun. 219, 289 (2003).
[CrossRef]

2002 (2)

Z. Ding, H. Ren, Y. Zhao, J. S. Nelson, and Z. Chen, Opt. Express 27, 243 (2002).
[CrossRef]

J. Van Rudd and D. M. Mittleman, J. Opt. Soc. Am. B 19, 319 (2002).
[CrossRef]

1987 (1)

1954 (1)

Barkan, A.

J. Lloyd, K. Wang, A. Barkan, and D. M. Mittleman, Opt. Commun. 219, 289 (2003).
[CrossRef]

Bitman, A.

Brown, C. T. A.

Buma, T.

Z. Zhang and T. Buma, Proc. SPIE 7938, 793806 (2011).
[CrossRef]

Chakraborty, S.

Chan, W. L.

W. L. Chan, J. Deibel, and D. M. Mittleman, Rep. Prog. Phys. 70, 1325 (2007).
[CrossRef]

Chen, Z.

Z. Ding, H. Ren, Y. Zhao, J. S. Nelson, and Z. Chen, Opt. Express 27, 243 (2002).
[CrossRef]

Davies, A. G.

Dean, P.

Deibel, J.

W. L. Chan, J. Deibel, and D. M. Mittleman, Rep. Prog. Phys. 70, 1325 (2007).
[CrossRef]

Dholakia, K.

Ding, Z.

Z. Ding, H. Ren, Y. Zhao, J. S. Nelson, and Z. Chen, Opt. Express 27, 243 (2002).
[CrossRef]

Dou, W.

Durnin, J.

Fischer, P.

Goodman, J. W.

J. W. Goodman, Introduction to Fourier Optics (McGraw-Hill, 1968).

Helm, M.

Hong, Z.

J. Liu, L. Wang, J. Li, W. Wang, and Z. Hong, Proc. SPIE 7854, 7854Z-1 (2010).
[CrossRef]

Jeon, S.-G.

Y.-S. Jim, G.-J. Kim, and S.-G. Jeon, J. Korean Phys. Soc. 49, 513 (2006).

Jim, Y.-S.

Y.-S. Jim, G.-J. Kim, and S.-G. Jeon, J. Korean Phys. Soc. 49, 513 (2006).

Khanna, S. P.

Kim, G.-J.

Y.-S. Jim, G.-J. Kim, and S.-G. Jeon, J. Korean Phys. Soc. 49, 513 (2006).

Koch, M.

Lachab, M.

Li, J.

J. Liu, L. Wang, J. Li, W. Wang, and Z. Hong, Proc. SPIE 7854, 7854Z-1 (2010).
[CrossRef]

Linfield, E. H.

Liu, J.

J. Liu, L. Wang, J. Li, W. Wang, and Z. Hong, Proc. SPIE 7854, 7854Z-1 (2010).
[CrossRef]

Lloyd, J.

J. Lloyd, K. Wang, A. Barkan, and D. M. Mittleman, Opt. Commun. 219, 289 (2003).
[CrossRef]

Lopez-Morsical, C.

Lumer, Y.

McLeod, J. H.

Mittleman, D. M.

W. L. Chan, J. Deibel, and D. M. Mittleman, Rep. Prog. Phys. 70, 1325 (2007).
[CrossRef]

J. Lloyd, K. Wang, A. Barkan, and D. M. Mittleman, Opt. Commun. 219, 289 (2003).
[CrossRef]

J. Van Rudd and D. M. Mittleman, J. Opt. Soc. Am. B 19, 319 (2002).
[CrossRef]

Morris, J. E.

Moshe, I.

Nelson, J. S.

Z. Ding, H. Ren, Y. Zhao, J. S. Nelson, and Z. Chen, Opt. Express 27, 243 (2002).
[CrossRef]

Peter, F.

Pupeza, I.

Ren, H.

Z. Ding, H. Ren, Y. Zhao, J. S. Nelson, and Z. Chen, Opt. Express 27, 243 (2002).
[CrossRef]

Schneider, H.

Shaukat, M. U.

Sibbett, W.

Van Rudd, J.

Wang, K.

J. Lloyd, K. Wang, A. Barkan, and D. M. Mittleman, Opt. Commun. 219, 289 (2003).
[CrossRef]

Wang, L.

J. Liu, L. Wang, J. Li, W. Wang, and Z. Hong, Proc. SPIE 7854, 7854Z-1 (2010).
[CrossRef]

Wang, W.

J. Liu, L. Wang, J. Li, W. Wang, and Z. Hong, Proc. SPIE 7854, 7854Z-1 (2010).
[CrossRef]

Wilk, R.

Winnerl, S.

Wright, E. M.

Yu, Y.

Y. Yu and W. Dou, Opt. Express 17, 888 (2009).
[CrossRef]

Y. Yu, in Progress in Electromagnetics Research Symposium Proceedings (2010), 1471.

Zalevsky, Z.

Zhang, Z.

Z. Zhang and T. Buma, Proc. SPIE 7938, 793806 (2011).
[CrossRef]

Zhao, Y.

Z. Ding, H. Ren, Y. Zhao, J. S. Nelson, and Z. Chen, Opt. Express 27, 243 (2002).
[CrossRef]

Zimmermann, B.

J. Korean Phys. Soc. (1)

Y.-S. Jim, G.-J. Kim, and S.-G. Jeon, J. Korean Phys. Soc. 49, 513 (2006).

J. Opt. Soc. Am. (1)

J. Opt. Soc. Am. A (1)

J. Opt. Soc. Am. B (2)

Opt. Commun. (1)

J. Lloyd, K. Wang, A. Barkan, and D. M. Mittleman, Opt. Commun. 219, 289 (2003).
[CrossRef]

Opt. Express (5)

Opt. Lett. (1)

Proc. SPIE (2)

J. Liu, L. Wang, J. Li, W. Wang, and Z. Hong, Proc. SPIE 7854, 7854Z-1 (2010).
[CrossRef]

Z. Zhang and T. Buma, Proc. SPIE 7938, 793806 (2011).
[CrossRef]

Rep. Prog. Phys. (1)

W. L. Chan, J. Deibel, and D. M. Mittleman, Rep. Prog. Phys. 70, 1325 (2007).
[CrossRef]

Other (2)

J. W. Goodman, Introduction to Fourier Optics (McGraw-Hill, 1968).

Y. Yu, in Progress in Electromagnetics Research Symposium Proceedings (2010), 1471.

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Figures (4)

Fig. 1.
Fig. 1.

Setup sketch of the imaging system for scanning the resolution target with a broadband Gaussian beam. The source is imaged to plane B.

Fig. 2.
Fig. 2.

Setup sketch of the imaging system for scanning the resolution target with a broadband Bessel beam. The region between the axicons is the area where the broadband J0 Bessel-like beam is produced.

Fig. 3.
Fig. 3.

Intensity distribution of the resolution-target at different distances from the objective-lens\axicon: (a) 30 mm from lens, (b) 30 mm from axicon, (c) 40 mm from lens, (d) 40 mm from axicon, (e) 50 mm from lens, and (f) 50 mm from axicon.

Fig. 4.
Fig. 4.

Comparison between imaging-contrast of a resolution target using broadband Gaussian (dashed) versus broadband Bessel (solid) beams. Imaging DOF was measured while placing the target in several distances from the objective lens\axicon.

Equations (2)

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Zmax=R(n1)·α.
contrast=ImaxIminImax+Imin,

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