
Optical pumping studies of vibrational energy transfer
... ror. The mirror was coated to transmit the CO laser, while reflecting the Nd:YAG laser. Q-branch spectra were obtained using the Nd:YAG laser in combination with an optical multichannel analyzer 共OMA兲 detector. The Nd:YAG laser had a single pulse output energy of 200 mJ at the second harmonic wavele ...
... ror. The mirror was coated to transmit the CO laser, while reflecting the Nd:YAG laser. Q-branch spectra were obtained using the Nd:YAG laser in combination with an optical multichannel analyzer 共OMA兲 detector. The Nd:YAG laser had a single pulse output energy of 200 mJ at the second harmonic wavele ...
Section – B - About iTutoring
... ions of second group are less in comparison to solubility products of sulphides of metal of III B group ions, therefore, HCl is added before adding H2S water to test the second group ions. H2S(aq) 2H+(aq) + S2-(aq) HCl(aq) H+(aq) + Cl-(aq) The common ion available from HCl creates common ion effect ...
... ions of second group are less in comparison to solubility products of sulphides of metal of III B group ions, therefore, HCl is added before adding H2S water to test the second group ions. H2S(aq) 2H+(aq) + S2-(aq) HCl(aq) H+(aq) + Cl-(aq) The common ion available from HCl creates common ion effect ...
Recent advances in diffuse optical imaging
... and Biology (Hebden et al 1997, Arridge and Hebden 1997) which summarized the state-ofthe-art of the field of medical optical imaging at that time. The first review (Hebden et al 1997) examined instrumentation and experimental techniques, while the second review discussed modelling light transport in ...
... and Biology (Hebden et al 1997, Arridge and Hebden 1997) which summarized the state-ofthe-art of the field of medical optical imaging at that time. The first review (Hebden et al 1997) examined instrumentation and experimental techniques, while the second review discussed modelling light transport in ...
Semiconductor Lasers Using Diffused Quantum
... at about 220 C. It is because the power density of the incident laser needed to heat the sample to the temperature where disordering occurs will be reduced significantly by the increase of background temperature. Another advantage of using ceramic is that its low thermal conductivity also helps in r ...
... at about 220 C. It is because the power density of the incident laser needed to heat the sample to the temperature where disordering occurs will be reduced significantly by the increase of background temperature. Another advantage of using ceramic is that its low thermal conductivity also helps in r ...
The Optical Cavity
... to different cavity modes (longitudinal and transverse) at different points in time. Remember that resonant coupling will only occur when at least one of the frequency components of the laser light matches at least one of the mode frequencies of the external cavity (which are changing in time due to ...
... to different cavity modes (longitudinal and transverse) at different points in time. Remember that resonant coupling will only occur when at least one of the frequency components of the laser light matches at least one of the mode frequencies of the external cavity (which are changing in time due to ...
Optical Parametric Processes with Femtosecond
... 6.4.1. Energy and Wavelength Stability Measurements ......................................................... 112 6.4.2. Dependence of the SC on Parameters of the Input Beam: NA and Energy .................. 114 6.4.3. Testing Another Sample Thickness and Material ................................. ...
... 6.4.1. Energy and Wavelength Stability Measurements ......................................................... 112 6.4.2. Dependence of the SC on Parameters of the Input Beam: NA and Energy .................. 114 6.4.3. Testing Another Sample Thickness and Material ................................. ...
Optical Fibres in Communications
... mode fibers have small size and low dopant level (typically 0.3% to 0.4% index elevation over the lading index.) In high silica fibers the wave-guide and the material dispersion are often of opposite signs. This fact can be used conveniently to achieve a single mode fiber of extremely large bandwidt ...
... mode fibers have small size and low dopant level (typically 0.3% to 0.4% index elevation over the lading index.) In high silica fibers the wave-guide and the material dispersion are often of opposite signs. This fact can be used conveniently to achieve a single mode fiber of extremely large bandwidt ...
Multimode Pumping of Optical Parametric Oscillators
... and WO the spot size of the fundamental mode ( n = 0). The x D.L.). The same beam quality was obtained using a regular constant f o is the factor by which the peak of the fundamental flat output coupler, when a variable intracavity aperture of mode exceeds threshold; i.e., the peak factor above thre ...
... and WO the spot size of the fundamental mode ( n = 0). The x D.L.). The same beam quality was obtained using a regular constant f o is the factor by which the peak of the fundamental flat output coupler, when a variable intracavity aperture of mode exceeds threshold; i.e., the peak factor above thre ...
Preparatory Problems of the 40th IChO - IChO-2016
... than three cubic feet of gas. To be precise, 3.068 cubic feet at 80.0 degrees and atmospheric pressure.’ ’You measured this?’ I cried. ’Of course I measured it,’ said Holmes with an impatient gesture. He took a small bottle labelled phenolphthalein and put a few drops of its contents into the bowl o ...
... than three cubic feet of gas. To be precise, 3.068 cubic feet at 80.0 degrees and atmospheric pressure.’ ’You measured this?’ I cried. ’Of course I measured it,’ said Holmes with an impatient gesture. He took a small bottle labelled phenolphthalein and put a few drops of its contents into the bowl o ...
(III) ion and a cobalt (II) - Iowa State University Digital Repository
... data and the curves drawn through the experimental data are the final best fit (calculated with the numerical integration program KINSIM) using the full rate law, equation 33, and the best values of all four rate ...
... data and the curves drawn through the experimental data are the final best fit (calculated with the numerical integration program KINSIM) using the full rate law, equation 33, and the best values of all four rate ...
Final Thesis_Compatible Mode
... communications include multi-mode optical fibers and single-mode optical fibers. Optical fiber has two low-attenuation regions. Centered at approximately 1300 nm is a range of 200 nm in which attenuation is less than 0.5 dB/km. The total bandwidth in this ...
... communications include multi-mode optical fibers and single-mode optical fibers. Optical fiber has two low-attenuation regions. Centered at approximately 1300 nm is a range of 200 nm in which attenuation is less than 0.5 dB/km. The total bandwidth in this ...
THE ROLE OF FeSO4 IN THE OBTAINING OF
... Polyvinylpirrolidone (PVP) copolymers with mono- and dimethacrylic esters of glycols are promising materials for the composite metal hydrogels because they are highly porous systems. The original porous structure providing copolymers swelling in water and high penetrability for low-molecular compoun ...
... Polyvinylpirrolidone (PVP) copolymers with mono- and dimethacrylic esters of glycols are promising materials for the composite metal hydrogels because they are highly porous systems. The original porous structure providing copolymers swelling in water and high penetrability for low-molecular compoun ...
Ultraviolet–visible spectroscopy

Ultraviolet–visible spectroscopy or ultraviolet-visible spectrophotometry (UV-Vis or UV/Vis) refers to absorption spectroscopy or reflectance spectroscopy in the ultraviolet-visible spectral region. This means it uses light in the visible and adjacent (near-UV and near-infrared [NIR]) ranges. The absorption or reflectance in the visible range directly affects the perceived color of the chemicals involved. In this region of the electromagnetic spectrum, molecules undergo electronic transitions. This technique is complementary to fluorescence spectroscopy, in that fluorescence deals with transitions from the excited state to the ground state, while absorption measures transitions from the ground state to the excited state.