Results 41 to 50 of about 816,203 (299)

A monolithic MQW InP-InGaAsP-Based optical comb generator [PDF]

, 2007
We report the first demonstration of a monolithic optical-frequency comb generator. The device is based on multi-section quaternary/quaternary eight-quantum-well InP-InGaAsP material in a frequency-modulated (FM) laser design. The modulation is generated
Cannard, P, Cole, S, Gregoire, S, Gwilliam, R, Lealman, I, Moore, R, Pantouvaki, M, Renaud, CC, Seeds, AJ   +8 more
core   +1 more source

Feasibility and Safety of High‐Dose Proton Re‐Irradiation in Recurrent Pediatric Central Nervous System Tumors: A Single‐Institution Retrospective Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Pediatric central nervous system (CNS) tumors often recur despite multimodality therapy. Although re‐irradiation (re‐RT) has historically been limited by concerns for severe late toxicities, modern techniques have renewed interest in this approach. Proton therapy provides dosimetric advantages that may enable curative re‐treatment with
Jin‐Ho Song, Jonathan Baron, Carlos Chavez Perez, Sidharth Ramesh, Jane Minturn, Kavita A. Desai, Amish C. Shah, Jean M. Belasco, Kristina A. Cole, Michael J. Fisher, Phillip B. Storm, Peter M. Madsen, Goldie Kurtz, Robert A. Lustig, Christine Hill‐Kayser, Michael J. LaRiviere   +15 more
wiley   +1 more source

SAR imagery of ocean-wave swell traveling in an arbitrary direction [PDF]

, 1984
The intensity wave like patterns observed in Synthetic Aperture Radar (SAR) are known to be caused by two mechanisms: the microwave radar cross sectional amplitude modulation due to tilt and hydrodynamic interaction of the long ocean waves, and intensity
Lyzenga, D. R., Rufenach, C. L., Shuchman, R. A.   +2 more
core   +1 more source

Coherent Umklapp Scattering of Light from Disordered Photonic Crystals

, 2000
A theoretical study of the coherent light scattering from disordered photonic crystal is presented. In addition to the conventional enhancement of the reflected light intensity into the backscattering direction, the so called coherent backscattering (CBS)
A. Yu. Sivachenko, E. Akkermans, E. Akkermans, E.E. Gorodnichev, J. D. Joannopoulos, M. E. Raikh, M. Kaveh, M.C.W. van Rosum, M.J. Stephen, M.P. van Albada, M.P. van Albada, P.E. Wolf, P.E. Wolf, S. Etemad, S. Etemad, S. John, Z. V. Vardeny   +16 more
core   +1 more source

Cosmic ray energy changes at the termination shock and in the heliosheath [PDF]

, 2006
Voyager 1 crossed the termination shock of the solar wind in December 2004 at 94 AU and currently measures the cosmic ray intensity in the heliosheath. To better understand this modulation region beyond the shock, where adiabatic energy changes should be
Caballero-Lopez, R. A., McCracken, K. G., McDonald, F. B., Mewaldt, R. A., Moraal, H., Ptsukin, V., Wiedenbeck, M. E.   +6 more
core   +1 more source

Two Faces of NOTCH1 in Childhood Lymphoblastic T‐Cell Neoplasia: Prognostic Divergence of Mutational and Structural Aberrations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT In pediatric patients, T‐cell lymphoblastic lymphoma (T‐LBL) survival exceeds 80%. Relapse remains associated with limited curative options. Frontline treatment is largely extrapolated from T‐cell acute lymphoblastic leukemia (T‐ALL) treatment, reflecting the ongoing debate, whether both entities represent distinct diseases or variants within ...
Marie C. Heider, Amelie Alfert, Marc Hotfilder, Birgit Burkardt, Marcel te Vrugt   +4 more
wiley   +1 more source

Transmission of 100-Gb/s PAM-6 Signal by Using DML Wavelength-Locked to Delay Interferometer

IEEE Photonics Journal
We experimentally demonstrate the transmission of 100-Gb/s 6-ary pulse amplitude modulation signal over 2-km standard single-mode fiber using a 1.55-μm directly-modulated laser (DML) wavelength-locked to a delay interferometer (DI).
Horyun Lee, Hoon Kim
doaj   +1 more source

Characterisation of the potential of frequency modulation and optical feedback locking for cavity-enhanced absorption spectroscopy

, 2012
A combination of optical feedback self-locking of a continuous-wave distributed feedback diode laser to a V-shaped high finesse cavity, laser phase modulation at a frequency equal to the free spectral range of the V-cavity and detection of the ...
Kasyutich, Vasili L., Sigrist, Markus W.
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

On the General Error Event Probability Evaluation of Optical Intensity Modulation Schemes

IEEE Photonics Journal, 2022
Wireless intensity-modulated optical channels feature some very specific differences compared to wireless radio channels. These properties have a strong impact on the performance of digital modulation techniques.
Henrik Schulze, Peter A. Hoeher
doaj   +1 more source