Results 91 to 100 of about 7,683 (202)
mSphere, 2018 Opsonophagocytic assays are used to measure functional antibodies important in protection against pneumococcal capsular antigens. There have been efforts to standardize these methods, as the assays are commonly used to measure vaccine immunogenicity.
A. Balloch +8 more
doaj +1 more source
Maintaining consistency between planning hierarchies: Techniques and applications [PDF]
In many planning and scheduling environments, it is desirable to be able to view and manipulate plans at different levels of abstraction, allowing the users the option of viewing and manipulating either a very detailed representation of the plan or a ...
Zoch, David R.
core +1 more source
RGB generation by four-wave mixing in small-core holey fibers
, 2007 We report the generation of white light comprising red, green, and blue spectral bands from a frequency-doubled fiber laser by an efficient four-wave mixing process in submicron-sized cores of microstructured holey fibers.
Horak, P. +7 more
core +1 more source
Guangtongxin yanjiu, 2011 文章对多个主振荡功率放大（MOPA）脉冲激光器采用阵列光纤光栅频谱合束技术进行了研究,模拟了采用阵列光纤光栅频谱合束技术将多个MOPA脉冲激光器合束输出的过程,研究了合束后时域脉冲形状的畸变,并提出了使输出脉冲平坦化的改进方法。研究结果表明,以2 ns为间隔控制各个通道的输入MOPA脉冲激光器的同步,可以改善输出脉冲的平坦性。
章建荣 +3 more
doaj
Solid-state laser intensity stabilization at the 10^-8 level [PDF]
, 2004 A high-power, low-noise photodetector, in conjunction with a current shunt actuator, is used in an ac-coupled servo to stabilize the intensity of a 10^-W cw Nd:YAG laser.
Abbott, Richard +4 more
core
Lacquer in the Americas: Building Bridges
HeritageThis Special Issue brings the Indigenous American lacquer community together, building bridges and overcoming the existing geographical and language obstacles.
Lucia Burgio, Dana Melchar, Monica Katz
doaj +1 more source
, 2008 We achieved a 0.5 Hz optical beat note line width with ~ 0.1 Hz/s frequency drift at 972 nm between two external cavity diode lasers independently stabilized to two vertically mounted Fabry-Perot (FP) reference cavities.
Alnis, J. +5 more
core +1 more source
Broadband Optical Serrodyne Frequency Shifting
, 2009 We demonstrate serrodyne frequency shifting of light from 200 MHz to 1.2 GHz with an efficiency of better than 60 percent. The frequency shift is imparted by an electro-optic phase modulator driven by a high-frequency, high-fidelity sawtooth waveform ...
Chu +19 more
core +1 more source
Traveling-Wave Photomixers Based On Noncollinear Optical/Terahertz Phase-Matching [PDF]
, 1999 Traveling-wave THz photomixers based on angle-tuned optical/THz phase-matching are experimentally demonstrated. A dc-biased coplanar stripline terminated by a planar antenna is fabricated on low-temperature-grown GaAs.
Blake, Geoffrey A. +6 more
core
Drive laser system for the DC-SRF photoinjector at Peking University
, 2015 Photoinjectors are widely used for linear accelerators as electron sources to generate high-brightness electron beam. Drive laser, which determines the timing structure and quality of the electron beam, is a crucial device of photoinjector.
Chen, Jiaer +6 more
core +1 more source