Journal: Scientific Reports

Article Title: Compact solid-state optical phased array beam scanners based on polymeric photonic integrated circuits

doi: 10.1038/s41598-021-90120-x

Figure Lengend Snippet: Schematics of the polymer waveguide-based OPA beam scanner with an integrated laser. ( a ) 2D beam scanner device consisting of the Bragg reflector, 1 × 32 power splitter, phase modulator array, and beam concentrator fabricated on a single chip. SLD chip, cylindrical lens, and diffraction grating are aligned and attached around the chip. ( b ) Horizontal beam scanning produced by controlling the phase distribution of the waveguide array through the polymeric phase modulator array. ( c ) Vertical beam scanning obtained by wavelength tuning of the integrated tunable laser and external diffraction grating.

Article Snippet: The fabricated polymer chip was attached to a thermoelectric cooler package along with the pigtailed fiber on the input, cylindrical lens (Hamamatsu’s fast axis collimator lens) for vertical collimation, and 45° mirror for beam path change, as shown in Fig. a.

Techniques: Polymer, Produced

Journal: Scientific Reports

Article Title: Compact solid-state optical phased array beam scanners based on polymeric photonic integrated circuits

doi: 10.1038/s41598-021-90120-x

Figure Lengend Snippet: Polymer waveguide OPA characterization. ( a ) Polymer waveguide chip attached on a TEC package along with the fiber pigtail on the input, cylindrical lens for vertical collimation, and 45° mirror. ( b ) Near-field pattern of the output modes of the polymer waveguide array. ( c ) Far-field pattern scattered in the horizontal direction caused by the initial random phases. ( d ) After performing the beamforming procedure, a well-focused main beam was produced, as well as weak side lobes. ( e , f ) Beam scanning in the left and right directions obtained by applying a phase slope signal in addition to the beamforming phases.

Article Snippet: The fabricated polymer chip was attached to a thermoelectric cooler package along with the pigtailed fiber on the input, cylindrical lens (Hamamatsu’s fast axis collimator lens) for vertical collimation, and 45° mirror for beam path change, as shown in Fig. a.

Techniques: Polymer, Produced

Journal: Optics letters

Article Title: A versatile multimodal modality based on Brillouin light scattering and photoacoustic effect

doi: 10.1364/OL.495361

Figure Lengend Snippet: Schematic of the multimodal modality based on Brillouin and PA techniques. HWP1-HWP3: half-wave plates; PBS1-PBS2: polarized beam splitter; L1-L5: lenses; OBJ: objective; PH: pin hole; C1-C3: cylindrical lenses; LP: lens pair; EMCCD: electron multiplying charge-coupled devices.

Article Snippet: A cylindrical lens (C1, f = 200 mm) was used to couple the Brillouin beam into the VIPA etalon (FSR=15 GHz, LightMachinery).

Techniques: