A polarized beam splitter (PBS252, Thorlabs Inc.) was used to make the excitation lasers linearly polarized after the scan mirrors. This ensured that the dichroic mirror (T770SPXR, AHF Analysentechnik AG) received a p-polarized laser light during the entire experiment. After the dichroic ...
1(a,d), we place a mirror in the focal plane of the objective and record the reflected images with a beam analyzer (Thorlabs, not shown in Supplementary Fig. S4). The intensity distributions of the two beams are shown in Supplementary Figs S5(a) and S5(b). The theoretical (solid ...
Two sets of spectra with the nanotube in and out of the beam focus were obtained to generate the contrast spectra by a spectrometer containing a grating (Thorlabs, GT50-03) and a linear CCD (Imaging Solution Group, LW ELIS-1024a-1394). The Gaussian spatial profile of the light source ...
MGL-FN-561, 200 mW) was expanded with an achromatic beam expander (Thorlabs, GBE10-B). A half-wave plate (Union, WPA2420-450-650) adjusted the polarization before the laser was passed through a polarization beam splitter (Thorlabs, CCM1-PBS251). A ferroelectric liquid crystal ...
In the vacuum chamber, the counter-propagating beams were focused by aspheric lenses L1, L2 (Thorlabs C240TME-C) of focal length 8 mm to create a trap with a beam waist of W0 ≈ 2.7 μm. Non-porous SiO2 microspheres (Bangs Laboratories, diameter 1.54 μm, size CV 10–15...
The second set corresponds to the energy of the beam after it has crossed first the λ/4 retarder with its fast axis at a given angle β (~π/2) and then the polarizer as a function of θ. In this case, the output energy will depend on θ as: Eopu,tλ/4 (θ) = T p,λ/...
To verify the formation of the two beams in the focal field by using the two phase modulations depicted in Fig. 1(a,d), we place a mirror in the focal plane of the objective and record the reflected images with a beam analyzer (Thorlabs, not shown in Supplementary Fig. S4). The...
applied sciences Article Generating Radially and Azimuthally Polarized Beams by Using a Pair of Lateral Displacement Beamsplitters Chien-Yuan Han 1, Zhi-Hao Wei 2, Yung Hsu 3, Kun-Huang Chen 4, Chien-Hung Yeh 2, Wei-Xuan Wu 2 and Jing-Heng Chen 2,* 1 Department of Electro-Optical ...
Beam quality was measured by a Thorlabs BP109IR beam-quality analyzer. Figure 9 shows the beam quality M2 measurement results. The laser M2 factor was 1.35 in the x-direction and 1.33 in the y-direction. The polarization extinction ratio (PRE) of the laser was measured in the experiment. ...