Submillimeter-wave imaging assisted alignment of millimeter-wave spectroscopic system for quantification of corneal water content

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

53 Lataukset (Pure)

Abstrakti

We propose an alignment strategy for millimeter spectroscopy of cornea that uses imaging to screen for sufficient alignment conditions. The performance of different corneal imaging objectives, in the presence of misalignment, is evaluated. The cornea is illuminated with a TEM00 Gaussian beam at 650 GHz and the beam is swept across the cornea. Images are generated by calculating the coupling between illumination and scattered beams for each illumination beam position and angle. The cornea is displaced at intervals of 500 microns in the transverse and axial directions and with new coupling coefficient maps generated at each misaligned position. Contrast in the misaligned cases are compared to the aligned case via zero normalized spatial cross correlation. The results show a maximum normalized cross correlation of 0.92 for a two-mirror scanning system and 0.74 for a one-mirror scanning objective. The analysis suggests that imaging contrast at 650 GHz can be used to screen for misalignment that would be difficult to detect with MMW.

AlkuperäiskieliEnglanti
OtsikkoSPIE Conference Proceedings
ToimittajatMona Jarrahi, Sascha Preu, Dmitry Turchinovich
Sivumäärä8
ISBN (elektroninen)9781510634688
DOI - pysyväislinkit
TilaJulkaistu - 1 tammikuuta 2020
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaSPIE Photonics Europe: Terahertz Photonics - Virtual, Online, Ranska
Kesto: 6 huhtikuuta 202010 huhtikuuta 2020

Julkaisusarja

NimiProceedings of SPIE : the International Society for Optical Engineering
Vuosikerta11348
ISSN (painettu)0277-786X
ISSN (elektroninen)1996-756X

Conference

ConferenceSPIE Photonics Europe
MaaRanska
KaupunkiVirtual, Online
Ajanjakso06/04/202010/04/2020

Sormenjälki

Sukella tutkimusaiheisiin 'Submillimeter-wave imaging assisted alignment of millimeter-wave spectroscopic system for quantification of corneal water content'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

Siteeraa tätä