two-photon absorption measurements
Towards Heralded Two-Photon Absorption and Two-Photon Excited Fluorescence for Quantum Microscopy and Spectroscopy
... until photon bunching on such ultra- fast timescales was observed due to limited detector ...exploited two-photon absorption in a semiconductor in combination with an interferometric ...
16
Mid-infrared two photon absorption sensitivity of commercial detectors
... power, two-photon GaAs/InGaAs quantum well infrared photodetectors (2P-QWIP) have been ...adequate two-photon absorption (TPA) sensitivity, whereas the second harmonic conversion ...
7
Photoluminescence upconversion at interfaces driven by a sequential two-photon absorption mechanism
... UPL measurements Having observed evidence of partial ordering and the spatial localization of carriers in the normal InGaP 2 PL, as well as an interface feature in the GaAs luminescence, we next turn our attention ...
8
Evaluation of the two-photon absorption characteristics of GaSb/GaAs quantum rings
... photo-response measurements therefore consists of a modulated pseudo-monochromatic (primary) light source in combination with a continuous (secondary) 525 nm ...to photon energies below ...photocurrent ...
7
Femtosecond two-photon absorption spectroscopy of poly(fluorene) derivatives containing benzoselenadiazole and benzothiadiazole
... Materials 2017, 10, 512 9 of 11 to an ICT transition. The later one is also observed along to the one-photon absorption spectrum due to the relaxation of the electric dipole selection rules in ...
11
Measurements of Absolute Atomic Nitrogen Density by Two Photon Absorption Laser Induced Fluorescence Spectroscopy in Hot Air Plasma Generated by Microwave Resonant Cavity
... Calibrated measurements based on TALIF laser diagnostics are done in both dry and humid air while the needed rotational temperature is estimated from OH (A-X) spectra measured using OES ...
23
Two Photon Absorption in Nanostructure Wide Band Gap Semiconductor CdS Using Femtosecond Laser
... nonlinear absorption coefficient was measured by fully computerized the z- scan ...The measurements show that the nonlin- ear absorption coefficient for the nanocrystallites is one order of magnitude ...
6
Competition between sub-bandgap linear detection and degenerate two-photon absorption in gallium arsenide photodiodes
... achieved two I-P characteristics of the diode while measuring the temperature by a PT100 thermo-resistor glued to the photodiode (see ...by two-photon absorption only occurs when the pulse is ...
5
Acceptance angle influence on optimum incident spot size for high finesse microcavity two photon absorption photodetectors
... From the theory it is found that this position does not corre- spond to the position which has the centered on the ab- sorbing region. The optical power on the microcavity was kept constant at 10 mW for the -scan ...
6
Dispersive white light continuum single Z-scan for rapid determination of degenerate two-photon absorption spectra
... 2PA measurements. To control the intensity of WLC required for measurements of different samples a set of half-wave plate and a polarizer is placed after the ...
10
Two photon absorption in semiconductor micro cavities
... into two beams and after one beam has been temporally delayed the beams from both arms of the interferometer are recombined at the ...the two co-parallel beams can be ...the two parallel beams ...
168
Generation of Nonclassical Light by Unsaturated Two Photon Absorption
... to two-photon absorption (TPA) and the fac- tors that contribute to squeezing and antibunching of photons, leading to the generation of nonclassical ...absorbing two photons si- ...initial ...
13
Two photon absorption based detection in semiconductor microcavities
... 5. Influence of limited cavity acceptance angle 5 .1 In flu e n c e o f acceptance angle In order for TPA based detection schemes to be considered for use it must be cost effective. In practice this means that the device ...
144
Polarization dependence of a GaAs based two photon absorption microcavity photodetector
... Fig. 5. Dependence of the TPA photocurrent on the state of polarization as it is rotated from circular to linear to circular along 4 different longitudinal lines of the Poincaré sphere, where θ is the orientation angle. ...
7
Multi photon absorption limits to heralded single photon sources
... single photon sources based on quantum dots 2 and defects in diamond 3 are being heavily investigated, however they are currently limited due to the inherent randomness of emission direction, large bulk optical ...
8
Enhanced two-photon absorption of ligated silver and gold nanoclusters: theoretical and experimental assessments
... Since the pioneering work of Goodson and co-workers 49 , who were the first to reveal giant TPA cross-sections for Au 25 (SR) 18 nanoclusters, several works have been reported on the two- photon ...
14
All optical sampling based on two photon absorption in a semiconductor microcavity for high speed OTDM
... Keywords: Optical Communications, Optical Time Division Multiplexing, Hybrid WDM/OTDM, Optical Sampling, Two-Photon Absorption, Microcavity 1. HIGH-SPEED OPTICAL MULTIPLEXING TECHNIQUES Due to the ...
10
Prospects for forward photon measurements at LHC
... Forward measurements at the LHC provide the opportunity to probe smaller x than at RHIC while also being further from the kinematic limit, thus probing deeper into the expected saturation ...regime. Photon ...
7
Jet and photon measurements from ATLAS
... the sub-leading jet was required to have p T > 50 GeV. Both jets were required to have rapidities |y| < 2.8. The dijet cross-section was measured as a function of the in- variant mass and y ∗ = |y j1 − y j2 |/2. The ...
5
Polarimetric, Two-Color, Photon-Counting Laser Altimeter Measurements of Forest Canopy Structure
... SIMPL's measurements provide infonnation about surface elevation, roughness and slope as well as scattering properties used to differentiate surface properties and types. By measuri[r] ...
10