Results 41 to 50 of about 150,884 (289)

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

FEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj, Eline M. F. de Lange, Klaas A. Sjollema, Ben N. G. Giepmans   +3 more
wiley   +1 more source

Comparative Study of Thermal Lens Effect in End Pulsed-Pumped Ceramics and Single Crystal Yb3+ YAG- Cr4+ YAG Passively Q-switched Microchip Laser. [PDF]

Journal of Bioscience and Applied Research, 2016
In this work, different thermal lens focal lengths with different pumping repetition rates for ceramic and single crystal Yb:YAGare calculated for controlling the thermal focal length without using additional optical elements .
Y. S. Nada, S. M. A. Maize
doaj   +1 more source

In-Well and Barrier Coupling Pump of Semiconductor Disk Laser

IEEE Photonics Journal, 2022
We report an in-well and barrier coupling pump scheme of semiconductor disk laser (SDL). An in-well-absorbed (940 nm) and a barrier-absorbed (808 nm) pump source were used to measure laser output characteristics. The output power of the coupling pump can
Jian Feng, Bo Meng, Cunzhu Tong, Andreas Popp, Berthold Schmidt, Lijie Wang, Huanyu Lu, Yanjing Wang, Xin Zhang, Lijun Wang   +9 more
doaj   +1 more source

Theory of double resonance magnetometers based on atomic alignment [PDF]

, 2006
We present a theoretical study of the spectra produced by optical-radio-frequency double resonance devices, in which resonant linearly polarized light is used in the optical pumping and detection processes. We extend previous work by presenting algebraic
Anatoly S. Pazgalev, Antoine Weis, E. B. Aleksandrov, E. B. Alexandrov, G. Bison, Georg Bison, K. Blum, N. Tsukada   +7 more
core   +2 more sources

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Perovskite lasers: From optical pumping to electrical pumping

FlexMat
Integrated photonics and quantum information technologies demand compact, energy‐efficient, and wavelength‐tunable coherent light sources. Metal halide perovskites have recently emerged as a versatile class of gain media for photonic applications ...
Kang Wang, Maria Vasilopoulou, Thamraa Alshahrani, Ilhwan Ryu, Muhammad Fazri bin Jasmin, Muhammad Danish Danial bin Zulkifli, Aliff Muhaimin bin Kamaruzaman, Muhammad Nafie bin Jakariah, Peng Gao, Abd Rashid bin Mohd Yusoff, Yong Sheng Zhao   +10 more
doaj   +1 more source

A laser head for simultaneous optical pumping of several dye lasers [PDF]

, 1973
Device accomplishes simultaneous optical pumping using single flashlamp and electrical driver. Dye lasers require relatively low energy to operate (low-threshold pumping requirement) and provide simple method for producing simultaneous independent laser ...
Mcalexander, B. T., Mumola, P. B.
core   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Design and Construction Optical Pumping System

مجلة بغداد للعلوم, 2013
In this work the design and construction of optical pumping system was presented. The parameters of the pumping source to obtain discharge current density sufficient to shift the flash lamp spectrum towards uv portion of spectrum were measured.The ...
Baghdad Science Journal
doaj   +1 more source

Synchronous Spin-Exchange Optical Pumping

Physical Review Letters, 2015
We describe a new approach to precision NMR with hyperpolarized gases designed to mitigate NMR frequency shifts due to the alkali spin exchange field. The electronic spin polarization of optically pumped alkali atoms is square-wave modulated at the noble-gas NMR frequency and oriented transverse to the DC Fourier component of the NMR bias field.
Korver, Anna, Thrasher, Daniel, Bulatowicz, Mike, Walker, Thad   +3 more
openaire   +4 more sources