Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Armin Kiessling"'
Publikováno v:
Optics Communications. 342:102-108
We present an interferometric method to gain a theoretically infinite depth of field. Simultaneously, this technique yields an enhanced lateral resolution. This can be achieved by measuring the complex coherence function using an image inverting inte
Publikováno v:
Optics Communications. 332:301-310
Image inversion microscopy enables an increase of the lateral resolution of optical microscopes. A huge advantage of the method is the possibility to combine it with different illumination techniques, because the required image inversion interferomet
Publikováno v:
Klinische Monatsblätter für Augenheilkunde. 230:1199-1206
Hintergrund: Die Abhangigkeit der Sehqualitat von Aberrationen hoherer Ordnung (AHO) ist sowohl fur die refraktive Chirurgie (LASIK) als auch fur die Korrektion durch Sehhilfen von groser Bedeutung. Durch den Einsatz der adaptiven Optik (AO) wird es
Publikováno v:
Optics Communications. 291:110-115
We propose a method to combine image inversion microscopy (IIM) with digital holography. By using this technique we are able to avoid some disadvantages of the IIM, like the use of a stabilized image inversion interferometer or the scanning process.
Autor:
Hendrik Jungnickel, Richard Kowarschik, Michael Gebhardt, Armin Kiessling, Hans Juergen Grein, Holger Babovsky
Publikováno v:
Journal of Refractive Surgery. 27:602-612
PURPOSE: To investigate effects of optical aberration correction on vision with glare. METHODS: Correction of aberrations up to the 6th Zernike order (closed-loop correction) was compared with conventional spectacle correction in 42 healthy eyes. To
Publikováno v:
Optics Communications. 284:2273-2277
The present paper presents the experimental measurement of the interferometric point spread function of an image inversion interferometer ( III ). The measurement was realized by scanning a pointlike source in the object plane and integrating the int
Publikováno v:
Optics Communications. 283:3631-3638
By applying tilted illumination on an object we record different sections of its Fourier spectrum in a row. We make use of an overlap between these sections to calculate their spatial frequency shift in sub-pixel accuracy by correlation methods. The
Publikováno v:
Optics Communications. 283:368-372
Based on the proposal of Wicker and Heintzmann “Interferometric resolution improvement for confocal microscopes” [1] we demonstrate in principle the functionality of an image inversion interferometer ( III ) experimentally, which can be described
Autor:
Richard Kowarschik, A. Matusevich, Stanislav M. Shandarov, A. Tolstik, M. G. Kisteneva, Armin Kiessling, Vladislav Matusevich
Publikováno v:
Applied Physics B. 96:119-125
A photorefractive BTO crystal is exposed with cw-laser beams (430 mW/cm2 at 514 nm), and the photo-induced absorption between 480 and 900 nm is studied. A method of controlling this absorption by low intensity laser radiation of “green” and “re
Autor:
Alexei L. Tolstik, Stanislav M. Shandarov, V. Matusevich, M. G. Kisteneva, Richard Kowarschik, A. Matusevich, Armin Kiessling
Publikováno v:
Applied Physics B. 92:219-224
A photorefractive Bi12TiO20 (BTO) crystal is exposed with high intensity pulsed-laser beams 532 nm (the average intensity of the laser was 110 mW/cm2, the average intensity per pulse was 2 MW/cm2), and the photo-induced dynamics of the absorption bet