Abstract

This article analyzes a simple method for the enhancement of laser radiation coupled into deep layers of turbid samples. This is accomplished by using a multilayer dielectric bandpass filter that acts as a unidirectional mirror and reflects photons re-emerging from the sample back into it. The research establishes a theoretical framework, and a very basic feasibility study is performed. In this study, laser intensity, delivered through a 14mm slab of tissue, and a 3.9mm pharmaceutical tablet were enhanced by factors of 1.6 and 3.8, respectively. Potential applications include photothermal and photodynamic cancer therapies of subsurface tissue, deep optical spectroscopy and imaging of biological tissue and powders, as well as thermal and optical subsurface treatment of powder materials, colloids, and catalysts.

© 2008 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Characterisation of signal enhancements achieved when utilizing a photon diode in deep Raman spectroscopy of tissue

Martha Z. Vardaki, Pavel Matousek, and Nicholas Stone
Biomed. Opt. Express 7(6) 2130-2141 (2016)

Optical lens-microneedle array for percutaneous light delivery

Moonseok Kim, Jeesoo An, Ki Su Kim, Myunghwan Choi, Matjaž Humar, Sheldon J. J. Kwok, Tianhong Dai, and Seok Hyun Yun
Biomed. Opt. Express 7(10) 4220-4227 (2016)

Polarized optical coherence imaging in turbid media by use of a Zeeman laser

C. Chou, L. C. Peng, Y. H. Chou, Y. H. Tang, C. Y. Han, and C. W. Lyu
Opt. Lett. 25(20) 1517-1519 (2000)

References

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
Login to access OSA Member Subscription

Cited By

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
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files 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
Login to access OSA Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations 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
Login to access OSA Member Subscription

Metrics

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
Login to access OSA Member Subscription