Results 51 to 60 of about 693,236 (350)
25 kHz narrow spectral bandwidth of a wavelength tunable diode laser with a short waveguide-based external cavity [PDF]
, 2012 We report on the spectral properties of a diode laser with a tunable external cavity in integrated optics. Even though the external cavity is short compared to other small-bandwidth external cavity lasers, the spectral bandwidth of this tunable laser is ...
C J Lee +9 more
core +6 more sources
Sensors, 2019 A photoacoustic spectroscopy (PAS) based carbon dioxide (CO2) sensor with a fixed wavelength quantum cascade laser (FW-QCL) was demonstrated. The emission wavelength of the FW-QCL at 4.42 μm in the mid-infrared spectral region matched a fundamental ...
Shunda Qiao +8 more
doaj +1 more source
A High-Performance and Temperature-Insensitive Shape Sensor Based on DPP-BOTDA
IEEE Photonics Journal, 2018 Distributed optical fiber strain sensing significantly increases the number of sensing points compared with fiber Bragg grating sensor, which makes it an excellent candidate for shape sensing. Theoretical analysis indicates that the spatial resolution of
Dexin Ba +6 more
doaj +1 more source
Adiabatic quantum simulations with driven superconducting qubits
, 2018 We propose a quantum simulator based on driven superconducting qubits where the interactions are generated parametrically by a polychromatic magnetic flux modulation of a tunable bus element.
Egger, Daniel J. +6 more
core +1 more source
International Journal of Antennas and Propagation, 2011 Diversified deformations on reflection-style optical antennas caused by processing technique and complex outer-space environment in free-space laser communications are modeled by wavelet analysis.
Wanqing Xie +3 more
doaj +1 more source
Chemosensors, 2022 As a new form of energy, hydrogen (H2) has clean and green features, and the detection of H2 has been a hot topic in recent years. However, the lack of suitable laser sources and the weak optical absorption of H2 limit the research concerning its ...
Tiantian Liang +3 more
doaj +1 more source
Probability density estimation with tunable kernels using orthogonal forward regression [PDF]
, 2009 A generalized or tunable-kernel model is proposed for probability density function estimation based on an orthogonal forward regression procedure. Each stage of the density estimation process determines a tunable kernel, namely, its center vector and ...
Chen, S., Harris, Chris J., Hong, Xia
core +1 more source
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 +3 more
wiley +1 more source
Sensors, 2022 Oxygen (O2) is a colorless and odorless substance, and is the most important gas in human life and industrial production. In this invited paper, a highly sensitive O2 sensor based on reflector-enhanced photoacoustic spectroscopy (PAS) is reported for the
Shuhan Yang +3 more
doaj +1 more source
Generation of widely tunable picosecond pulses with large SMSR by externally injecting a gain-switched dual laser source [PDF]
, 2004 The authors demonstrate a procedure of generating picosecond optical pulses that are tunable over a wide wavelength range (65 nm) and have very high spectral purity side-mode suppression ratio [(SMSR)>60 dB].
Anandarajah, Prince M. +2 more
core +1 more source