Optical Cherenkov radiation in ultrafast cascaded second-harmonic generation by Bache, M., Bang, O., Zhou, B. B., Moses, Joel, Wise, F. W.

“…We show through theory and numerics that when few-cycle femtosecond solitons are generated through cascaded (phase-mismatched) second-harmonic generation, these broadband solitons can emit optical Cherenkov radiation in the form of linear dispersive waves located in the red part of the spectrum. …”
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Room-temperature photonic logical qubits via second-order nonlinearities by Krastanov, Stefan, Heuck, Mikkel, Shapiro, Jeffrey H, Narang, Prineha, Englund, Dirk R, Jacobs, Kurt

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Chirality-Dependent Second Harmonic Generation of MoS 2 Nanoscroll with Enhanced Efficiency by Qian, Qingkai, Zu, Rui, Ji, Qingqing, Jung, Gang Seob, Zhang, Kunyan, Zhang, Ye, Buehler, Markus J, Kong, Jing, Gopalan, Venkatraman, Huang, Shengxi

“…© 2020 American Chemical Society. Materials with high second harmonic generation (SHG) efficiency and reduced dimensions are favorable for integrated photonics and nonlinear optical applications. …”
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Eleven-channel second-order silicon microring-resonator filterbank with tunable channel spacing by Dahlem, Marcus Vinicius Sobral, Holzwarth, Charles W., Khilo, Anatol M., Kaertner, Franz X., Smith, Henry Ignatius, Ippen, Erich P.

“…A wide-band, eleven-channel second-order filterbank fabricated on an SOI platform is demonstrated with tunable channel spacing and a 20 GHz single-channel bandwidth. …”
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Efficient second harmonic generation in the optical telecom S-band using non-segmented PPKTP waveguides by Kaertner, Franz X., Nejadmalayeri, Amir H., Roberts, Tony D., Wong, Franco N. C.

“…Continuous channel waveguides in periodically poled KTiOPO[subscript 4] with guided orthogonal polarizations are used to demonstrate type-II background-free second harmonic generation at 1505 nm with 1.2 %/(W cm[superscript 2]) normalized efficiency.…”
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A VCO-based analog-to-digital converter with second-order sigma-delta noise shaping by Park, Min, Perrott, Michael H.

“…A voltage-controlled oscillator (VCO) based analog-to-digital converter (ADC) utilizing Sigma-Delta (Sigma-Delta) techniques for second order quantization noise shaping is presented. …”
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Fermi energy dependence of first- and second-order Raman spectra in graphene: Kohn anomaly and quantum interference effect by Hasdeo, Eddwi H., Nugraha, Ahmad R. T., Dresselhaus, Mildred, Saito, Riichiro

“…Intensities of the first- and the second-order Raman spectra are calculated as a function of the Fermi energy. …”
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Ultrahigh speed 1050nm swept source / Fourier domain OCT retinal and anterior segment imaging at 100,000 to 400,000 axial scans per second by Potsaid, Benjamin M., Baumann, Bernhard, Huang, David, Barry, Scott, Cable, Alex E., Schuman, Joel S., Duker, Jay S., Fujimoto, James G.

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Active Nonlinear Acoustic Sensing of an Object with Sum or Difference Frequency Fields by Zhang, Wenjun, Liu, Yuming, Ratilal, Purnima, Cho, Byunggu, Makris, Nicholas

“…Analytic expres sions for second-order fields due to combinations of planar and far-field wave-wave interactions are also derived as are conditions for when wave-wave interactions will dominate the second order field. …”
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Ultrahigh speed spectral / Fourier domain ophthalmic OCT imaging by Chen, Yueli, Srinivasan, Vivek J., Gorczynska, Iwona, Liu, Jonathan Jaoshin, Fujimoto, James G., Potsaid, Benjamin M., Duker, Jay S., Cable, Alex E., Jiang, James

“…We demonstrate: extended imaging range and improved sensitivity roll-off at 70,000 axial scans per second , high speed and ultrahigh resolution imaging at 106,382 axial scans per second, and ultrahigh speed imaging at 250,000-312,500 axial scans per second. …”
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Optimum Power Control at Finite Blocklength by Yang, Wei, Caire, Giuseppe, Durisi, Giuseppe, Polyanskiy, Yury

“…It is shown that in both the cases, the second-order term is proportional to (n[superscript -1] ln n)[superscript 1/2]. …”
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Ultrahigh speed volumetric ophthalmic OCT imaging at 850nm and 1050nm by Potsaid, Benjamin M., Liu, Jonathan Jaoshin, Manjunath, Varsha, Gorczynska, Iwona, Srinivasan, Vivek J., Jiang, James, Barry, Scott, Cable, Alex E., Duker, Jay S., Fujimoto, James G.

“…A spectral / Fourier domain instrument using a high speed CMOS linescan camera with SLD light source centered at 850nm achieves speeds of ~91,000 axial scans per second with ~3μm axial resolution in tissue. A spectral / Fourier domain instrument using an InGaAs linescan camera with SLD light source centered at 1050nm achieves ~47,000 axial scans per second with ~7μm resolution in tissue. …”
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Distributed Random Access Algorithm: Scheduling and Congesion Control by Jiang, Libin, Shah, Devavrat, Shin, Jinwoo, Walrand, Jean

“…For the first algorithm, the paper proves rate stability for strictly feasible arrival rates and also Harris recurrence of the queues. For the second algorithm, the paper proves the ε [epsilon]-optimality in terms of the utilities of the allocated rates. …”
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130-W picosecond green laser based on a frequency-doubled hybrid cryogenic Yb:YAG amplifier by Hong, Kyung-Han, Lai, Chien-Jen, Siddiqui, Aleem M., Kaertner, Franz X.

“…The M[superscript 2] value of 2.7, measured at 77 W of second-harmonic power, demonstrates a good focusing quality. …”
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A Magnetic Retrieval System for Stents in the Pancreaticobiliary Tree by Cantillon-Murphy, Padraig, Ryou, Marvin, Shaikh, Sohail N., Azagury, Dan, Ryan, Michele, Thompson, Christopher C., Lang, Jeffrey H.

“…This stent is later removed once the patient has fully recovered, but today this necessitates a second endoscopic intervention. The final goal of this work is to obviate the second intervention. …”
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Double resonance Raman modes in monolayer and few-layer MoTe[subscript 2] by Guo, Huaihong, Yang, Teng, Yamamoto, Mahito, Zhou, Lin, Ishikawa, Ryo, Ueno, Keiji, Tsukagoshi, Kazuhito, Zhang, Zhidong, Saito, Riichiro, Dresselhaus, Mildred

“…We study the second-order Raman process of mono- and few-layer MoTe[subscript 2], by combining ab initio density functional perturbation calculations with experimental Raman spectroscopy using 532, 633, and 785 nm excitation lasers. …”
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4D dynamic imaging of the eye using ultrahigh speed SS-OCT by Grulkowski, Ireneusz, Jayaraman, Vijaysekhar, Cable, Alex E., Kraus, Martin Franz Georg, Hornegger, Joachim, Duker, Jay S., Fujimoto, James G., Liu, Jonathan Jaoshin, Potsaid, Benjamin M.

“…Using an ultrahigh speed tunable vertical cavity surface emitting laser (VCSEL) light source based SS-OCT prototype system, we performed imaging of human eye dynamics in four different imaging modes: 1) Pupillary reaction to light at 200,000 axial scans per second and 9 μm resolution in tissue. 2) Anterior eye focusing dynamics at 100,000 axial scans per second and 9 μm resolution in tissue. 3) Tear film break up at 50,000 axial scans per second and 19 μm resolution in tissue. 4) Retinal blood flow at 800,000 axial scans per second and 12 μm resolution in tissue. …”
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Finite-blocklength channel coding rate under a long-term power constraint by Yang, Wei, Caire, Giuseppe, Durisi, Giuseppe, Polyanskiy, Yury

“…It is shown that in both cases the second-order term is proportional to √(log n)/n.…”
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Minimal Realization Problems for Jump Linear Systems by Sarkar, Tuhin, Roozbehani, Mardavij, Dahleh, Munther A

“…The first problem is concerned with characterizing the minimal state space dimension solely from input-output pairs and without any knowledge of the number of mode switches. The second problem is concerned with characterizing the number of discrete modes of the JLS. …”
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A Statistical Learning Theory Framework for Supervised Pattern Discovery by Huggins, Jonathan H., Rudin, Cynthia

“…In the first version, collections of patterns can be generated in an arbitrary manner and the data consist of multiple labeled collections. In the second version, the patterns are assumed to be generated independently by identically distributed processes. …”
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