Results 31 to 40 of about 283,378 (319)
Interferometric tunability of absorption
Optics Express, 2006 We propose an interferometric setup that permits to tune the quantity of radiation absorbed by an object illuminated by a fixed light source. The method can be used to selectively irradiate portions of an object based on their transmissivities or to accurately estimate the transmissivities from rough absorption measurements.
GIOVANNETTI, VITTORIO +2 more
openaire +5 more sources
Tunable transform-limited pulse generation using self-injection locking of an FP laser [PDF]
, 1993 Wavelength-tunable, near transform-limited pulses have been generated using a Fabry-Perot laser diode coupled to a fiber loop containing a fiber Fabry-Perot resonator (FFPR) and a polarization controller.
Barry, Liam P. +8 more
core +1 more source
Effects of atmospheric turbulence on fiber-coupled DPSK system in Satellite-to-Ground downlink
Results in Physics, 2018 Fiber-coupled differential phase-shift keying (DPSK) modulation is potentially an effective approach for further high-speed satellite lasercom, due to the high detection sensitivity, low linewidth requirements, and uncalled-for complex phase-locked loop ...
Qingbo Yang +6 more
doaj +1 more source
Highly Sensitive and Fast Hydrogen Detection Based on Light-Induced Thermoelastic Spectroscopy
Ultrafast Science, 2023 As a new energy source, hydrogen (H2) detection is a hot topic in recent years. Because of the weak absorption characteristic, laser spectroscopy-based H2 detection is challenging.
Yufei Ma +4 more
doaj +1 more source
Fabrics with Tunable Oleophobicity [PDF]
Advanced Materials, 2009 United States. Air Force Office of Scientific Research (contract no. FA9550-07-1-0272)
McKinley, Gareth H. +5 more
openaire +3 more sources
Characterization of a novel three-section tunable slotted fabry-perot laser [PDF]
, 2010 A novel three-section tunable slotted-Fabry-Perot laser has been examined. Characterizations of the linewidth, SMSR and RIN indicate that this type of laser may be a suitable source for dynamic networks employing advanced optical modulation ...
Smyth, Frank +18 more
core +1 more source
Quartz-Enhanced Photoacoustic Spectroscopy Sensor with a Small-Gap Quartz Tuning Fork
Sensors, 2018 A highly sensitive quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor based on a custom quartz tuning fork (QTF) with a small-gap of 200 μm was demonstrated.
Yu-Fei Ma +4 more
doaj +1 more source
Photoacoustics, 2021 A gas sensing method based on quartz-enhanced photothermal spectroscopy (QEPTS) demodulated by quartz tuning fork (QTF) sensing acoustic wave is reported for the first time. Different from traditional QEPTS, the method proposed in this paper utilizes the
Ziting Lang +3 more
doaj +1 more source
Accelerated simulation of tunable vibration energy harvesting systems using a linearised state-space technique [PDF]
, 2011 This paper proposes a linearised state-space technique to accelerate the simulation of tunable vibration energy harvesting systems by at least two orders of magnitude.
Weddell, Alex +11 more
core +1 more source
Pre-Shaped Burst-Mode Hybrid MOPA Laser System at 10 kHz Pulse Frequency
Sensors, 2023 A temporal pre-shaped burst-mode hybrid fiber-bulk laser system was illustrated at a 10 kHz rate with a narrow spectral linewidth. A theoretical model was proposed to counteract the temporal profile distortion and compensate for the desired one, based on
Shanchun Zhang +3 more
doaj +1 more source