What is a first focal plane scope? On a First focal plane (sometimes referred to as Front focal plane or FFP), the reticle changes size as you change the magnification. Using the same example above, if you have a 3-10x scope, the reticle is much smaller on 3x. When the power is in...
The erector lens is positioned between a first focal plane () and a second focal plane (). The reticle is disposed at a distance of the second focal length so as to coincide with on the second focal plane. The LED prism is ... YL Chen,SY Liang - US 被引量: 217发表: 2005年 Spac...
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4d). We find the beam velocity by tracking the time of peak transmission intensity for each slit position in the focal plane (Supplementary Fig. 4c). Control systems and data acquisition To produce the scanning pattern of the excitation beam, a ramp waveform (t = 1.25 µs, V0...
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2 × Rayleigh length, of 4.5 mm, giving enough tolerance for the alignment of the sample in the focal plane. Surrounding the sample there is a long- and shortpass filter. The former filters out any spurious light at wavelengths below 800 nm, while the latter suppresses the ...
In the case of AP beam excitation, IminImin and ImaxImax are the minimum and the maximum values of the total field intensity of the AP beam in the focal plane, P is the energy flux through the geometrical cross section of the particle in the focal plane....
We can obtain the subtractive SHG image of the sample by substituting the object function to Equation (1) in the Method while the first term of the equation exactly represents the conventional SHG image under the scanning of the Gaussian bright focal spot. The conventional and subtractive images...
but since the signal levels were very low at the beginning of the measurement an average over 10 measurements was taken for the first 4.5 min. Over time, the second harmonic signal starts building up slowly and as the intensity increases the patterns become more and more forward directed as...