Matches in SemOpenAlex for { <https://semopenalex.org/work/W2464849618> ?p ?o ?g. }
Showing items 1 to 91 of
91
with 100 items per page.
- W2464849618 abstract "High-density optical disk data storage requires high numerical aperture objectives to achieve a minimum spot size at focus (N.A. & 0.4). At these numerical apertures the standard approximations of the classical diffraction theory fail, and it becomes necessary to introduce corrections for the neglected factors. In addition, the classical theory is a scalar theory which must be corrected for the effects of polarization. We show, starting from the fundamental postulates of diffraction theory, that it is possible to obtain exact formulas for the distribution of light at and near the focus of high numerical aperture objectives. This is different from previous work1–3 in that our computations require only a sequence of 2-D fast Fourier transforms. We show that when the incident beam is linearly polarized, one can compute the field distribution in a plane parallel to the object plane with either three (Fraunhofer diffraction), four (Fresnel diffraction), or five (high N.A. tens action) fast Fourier transforms. The technique has been used in computing the distribution of light at various cross sections in the focusing/tracking arm of a magne-tooptical disk system. We discuss the relationship between groove structure (used for tracking) and astigmatic optics (used for focusing) and their combined effect on the error signals. Finally, we show that the same technique can be applied to analyzing the frequency response of the magne-tooptic readout channel. (12 min)" @default.
- W2464849618 created "2016-07-22" @default.
- W2464849618 creator A5039173023 @default.
- W2464849618 creator A5059999605 @default.
- W2464849618 date "1986-01-01" @default.
- W2464849618 modified "2023-09-23" @default.
- W2464849618 title "Optics of pregrooved magneto-optical disk systems" @default.
- W2464849618 cites W2063497932 @default.
- W2464849618 cites W2103293381 @default.
- W2464849618 cites W2154152792 @default.
- W2464849618 doi "https://doi.org/10.1364/cleo.1986.fi2" @default.
- W2464849618 hasPublicationYear "1986" @default.
- W2464849618 type Work @default.
- W2464849618 sameAs 2464849618 @default.
- W2464849618 citedByCount "0" @default.
- W2464849618 crossrefType "proceedings-article" @default.
- W2464849618 hasAuthorship W2464849618A5039173023 @default.
- W2464849618 hasAuthorship W2464849618A5059999605 @default.
- W2464849618 hasConcept C102519508 @default.
- W2464849618 hasConcept C11413529 @default.
- W2464849618 hasConcept C120665830 @default.
- W2464849618 hasConcept C121332964 @default.
- W2464849618 hasConcept C147789679 @default.
- W2464849618 hasConcept C154236941 @default.
- W2464849618 hasConcept C159108749 @default.
- W2464849618 hasConcept C166453422 @default.
- W2464849618 hasConcept C185592680 @default.
- W2464849618 hasConcept C191711199 @default.
- W2464849618 hasConcept C192209626 @default.
- W2464849618 hasConcept C205049153 @default.
- W2464849618 hasConcept C207114421 @default.
- W2464849618 hasConcept C24890656 @default.
- W2464849618 hasConcept C2524010 @default.
- W2464849618 hasConcept C33923547 @default.
- W2464849618 hasConcept C41008148 @default.
- W2464849618 hasConcept C45374587 @default.
- W2464849618 hasConcept C50282329 @default.
- W2464849618 hasConcept C57691317 @default.
- W2464849618 hasConcept C62520636 @default.
- W2464849618 hasConcept C6260449 @default.
- W2464849618 hasConcept C78336883 @default.
- W2464849618 hasConceptScore W2464849618C102519508 @default.
- W2464849618 hasConceptScore W2464849618C11413529 @default.
- W2464849618 hasConceptScore W2464849618C120665830 @default.
- W2464849618 hasConceptScore W2464849618C121332964 @default.
- W2464849618 hasConceptScore W2464849618C147789679 @default.
- W2464849618 hasConceptScore W2464849618C154236941 @default.
- W2464849618 hasConceptScore W2464849618C159108749 @default.
- W2464849618 hasConceptScore W2464849618C166453422 @default.
- W2464849618 hasConceptScore W2464849618C185592680 @default.
- W2464849618 hasConceptScore W2464849618C191711199 @default.
- W2464849618 hasConceptScore W2464849618C192209626 @default.
- W2464849618 hasConceptScore W2464849618C205049153 @default.
- W2464849618 hasConceptScore W2464849618C207114421 @default.
- W2464849618 hasConceptScore W2464849618C24890656 @default.
- W2464849618 hasConceptScore W2464849618C2524010 @default.
- W2464849618 hasConceptScore W2464849618C33923547 @default.
- W2464849618 hasConceptScore W2464849618C41008148 @default.
- W2464849618 hasConceptScore W2464849618C45374587 @default.
- W2464849618 hasConceptScore W2464849618C50282329 @default.
- W2464849618 hasConceptScore W2464849618C57691317 @default.
- W2464849618 hasConceptScore W2464849618C62520636 @default.
- W2464849618 hasConceptScore W2464849618C6260449 @default.
- W2464849618 hasConceptScore W2464849618C78336883 @default.
- W2464849618 hasLocation W24648496181 @default.
- W2464849618 hasOpenAccess W2464849618 @default.
- W2464849618 hasPrimaryLocation W24648496181 @default.
- W2464849618 hasRelatedWork W1495837618 @default.
- W2464849618 hasRelatedWork W1529057397 @default.
- W2464849618 hasRelatedWork W1968774678 @default.
- W2464849618 hasRelatedWork W1984943071 @default.
- W2464849618 hasRelatedWork W2016226383 @default.
- W2464849618 hasRelatedWork W2089243112 @default.
- W2464849618 hasRelatedWork W2138054833 @default.
- W2464849618 hasRelatedWork W2141718618 @default.
- W2464849618 hasRelatedWork W2151680915 @default.
- W2464849618 hasRelatedWork W2290781207 @default.
- W2464849618 hasRelatedWork W2509542039 @default.
- W2464849618 hasRelatedWork W2747173430 @default.
- W2464849618 hasRelatedWork W2771606253 @default.
- W2464849618 hasRelatedWork W2794054365 @default.
- W2464849618 hasRelatedWork W2883774760 @default.
- W2464849618 hasRelatedWork W2952154416 @default.
- W2464849618 hasRelatedWork W2991701578 @default.
- W2464849618 hasRelatedWork W3011070282 @default.
- W2464849618 hasRelatedWork W3012218130 @default.
- W2464849618 hasRelatedWork W2866275858 @default.
- W2464849618 isParatext "false" @default.
- W2464849618 isRetracted "false" @default.
- W2464849618 magId "2464849618" @default.
- W2464849618 workType "article" @default.