OPTICAL DATA STORAGE USING A SOLID IMMERSION LENS
نویسندگان
چکیده
منابع مشابه
Advanced optical characterization of micro solid immersion lens
We report on the advanced optical characterizations of microfabricated solid immersion lenses with 2-μm diameter, operating at λ = 642 nm. The main feature, the spot size reduction, has been investigated by applying a focused Gaussian beam of NA = 0.9. Particular illuminating beams, e.g., Bessel-Gauss beams of the zeroth and the first order, a doughnutshape beam and its decompositions, i.e. two...
متن کاملSubwavelength-size solid immersion lens.
We report on the fabrication and characterization of nanoscale solid immersion lenses (nano-SILs) with sizes down to a subwavelength range. Submicrometer-scale cylinders fabricated by electron-beam lithography are thermally reflowed to form a spherical shape. Subsequent soft lithography leads to nano-SILs on transparent substrates for optical characterization. The optical characterization is pe...
متن کاملLock-in thermal IR imaging using a solid immersion lens
A hemispherical silicon solid immersion lens (SIL) was used to improve the spatial resolution of front-side thermal IR imaging in lock-in mode. The bottom of the SIL was cone-shaped to reduce the footprint of the SIL to the size of the imaged region. Caused by the lock-in operation mode, the detection limit improves by 2-3 orders of magnitude, and scattered light does not limit the image contra...
متن کاملNear-field infrared imaging with a microfabricated solid immersion lens
We report imaging in the infrared with a microfabricated solid immersion lens. The integrated 15-mm-diameter lens and cantilever are fabricated from single-crystal silicon and scanned in contact with a sample to obtain an image. We demonstrate a focused spot size of l/5 and an effective numerical aperture of 2.5 with l59.3 mm light. The total power transmitted through the lens is a factor of 10...
متن کاملThermal Microscopy with a Microfabricated Solid Immersion Lens
The spatial resolution of infrared thermometry is limited by diffraction to dimensions close to the wavelength of the collected infrared radiation, typically 5 μm at room temperatures. Thermal properties variations, temperature gradients, and defects with dimensions smaller than the diffraction limit are inaccessible to far-field infrared thermometry. This work demonstrates a near-field method ...
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ژورنال
عنوان ژورنال: Journal of the Magnetics Society of Japan
سال: 1995
ISSN: 1880-4004,0285-0192
DOI: 10.3379/jmsjmag.19.s1_409