Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Eung Gi Paek"'
Publikováno v:
Optics Communications. 170:221-227
The modulation transfer function (MTF) of a pixelated liquid crystal spatial light modulator (LC-SLM) has been derived as a function of the fill factor. Based on the formula, we have investigated the dependence of the MTF on the orientations and spat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6540642045b7d49c0d1bfdcce3aa684d
https://doi.org/10.1016/s0030-4018(99)00499-x
https://doi.org/10.1016/s0030-4018(99)00499-x
Autor:
J.A. Salehi, null Eung Gi Paek
Publikováno v:
IEEE Transactions on Communications. 43:2434-2438
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1081ed5aaea6a3347654576936de9d03
https://doi.org/10.1109/26.412717
https://doi.org/10.1109/26.412717
Publikováno v:
Principles of Waveform Diversity and Design ISBN: 9781891121951
Time reversal can play a significant role in improving the performance of current sky-wave high-frequency over-the-horizon-radar (HF OTHR), especially with respect to real-time monitoring and compensation of ionospheric turbulence. Also, multipath in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4fa9c8137a0087d8e19eaaafb4c550d7
https://doi.org/10.1049/sbra023e_ch14
https://doi.org/10.1049/sbra023e_ch14
Autor:
Eung-Gi Paek, Joon Y. Choe
An array of independent, separate, distributed time-reversal mirrors (TRMs) that can function as a large array in a coherent (collective and co-operative) manner is described. Due to the unique feature of time-reversal to compensate for the propagati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8621bdc9b1576d37ebef65bef98e31eb
https://zenodo.org/record/1279226
https://zenodo.org/record/1279226
Publikováno v:
IEEE Journal of Quantum Electronics. 28:2251-2261
Storage, recall, and processing of shaped femtosecond waveforms are achieved by performing spectral holography within a femtosecond pulse shaping apparatus. Time reversal, as well as correlation and convolution, of femtosecond temporal signals is dem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0509009f87c0b65e7192a312c2b80315
https://doi.org/10.1109/3.159532
https://doi.org/10.1109/3.159532
Publikováno v:
Optics letters. 20(18)
A novel system that is capable of switching/routing two-dimensional images in arbitrary configurations is described. The switching network can be reconfigured in a few microseconds with high light efficiency.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5c33d1207212087017d604f432b6046
https://pubmed.ncbi.nlm.nih.gov/19862197
https://pubmed.ncbi.nlm.nih.gov/19862197
Publikováno v:
Optics letters. 17(3)
Storage and subsequent recall of shaped femtosecond waveforms is achieved by performing spectral holography within a femtosecond pulse-shaping apparatus. Readout of the spectral hologram by using a short reference pulse yields both real and time-reve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76bb55a7c37c9a1edeb21f9f2075c464
https://pubmed.ncbi.nlm.nih.gov/19784283
https://pubmed.ncbi.nlm.nih.gov/19784283
Autor:
Eung Gi Paek, E. C. Jung
Publikováno v:
Optics letters. 16(13)
A simplified holographic associative memory by enhanced nonlinear recording using a thermoplastic plate is described. The system is based on two new concepts: The system utilizes the second-order diffraction instead of the first-order diffraction, an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9d4a3e1503eafb978191c926f830761
https://pubmed.ncbi.nlm.nih.gov/19776867
https://pubmed.ncbi.nlm.nih.gov/19776867
Publikováno v:
Optics letters. 16(12)
A compact and robust holographic correlator using a vertical-cavity surface-emitting microlaser diode array is described. The system is based on the unique coherence property of the surface-emitting microlaser array: temporally highly coherent and sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b75b01f4995cfe18eee90bad87676e63
https://pubmed.ncbi.nlm.nih.gov/19776835
https://pubmed.ncbi.nlm.nih.gov/19776835