◆White light angle-resolution spectrum or imaging (standard function): white light dispersion relationship, i.e. energy band diagram 𝜔~𝑘, 𝜔~𝜃. ◆PL angle-resolution spectrum or imaging (standard function): the relationship between fluorescence emission peak position and emission angle, i.e.,𝜔~𝑘, 𝜔~𝜃
In the field of super surface/metamaterials: angular resolution spectroscopy is used to characterize the angular dependent resonant mode characteristics. In the field of nanophotonics: the dispersion relationship, the polarization state in momentum space and the topological charge distribution of periodic nanostructures are characterized. In the field of surface plasmon: the dispersion relation of periodic array structure and the anti-cross line of strong coupling hybrid structure are characterized.
| Instrument | Parameters |
|---|---|
| Excitation light source | The transmission/reflection/scattering angle-resolution mode is equipped with 100W halogen lamp white-light source, and the PL emission angle-resolution is equipped with 450nm semiconductor laser. |
| Optical fiber spectrometer | slit 100 um, pixel 1 × 2048, dynamic range 3000:1, integration time 1ms~60s, wavelength range 300~1000nm or 900~1700nm (some parameters can be customized). |
| 2D motorized translation stages | minimum step size 0.05um, unidirectional repetition accuracy < 1um, travel 80mm*60mm. |
| Microscopic imaging module | Imaging spatial resolution ≤ 1um; CMOS parameters: 1 inch, 2.4um pixels, resolution 15fps@5440 *3648; Half compound achromatic bright-field objective group: 5X-100X, 0.15-0.9NA; White-light Kohler illumination mode. |
| Fixed-angle incidence module | The resolution of incident light with point-focusing is 1um@0.9NA Objective; The range of wide-field excitation is 100um @0.9NA Objective; Point-focusing and wide-field excitation can be switched quickly, and multiple channels can be used for coupling incident laser; Fixed-angle incident resolution ≤ 3 ° white-light source or laser source based on 100um fiber-coupled output. |
| Angle-resolution collection module | the collection angle-resolution is ≤ 0.3 °/pixel (based on area array CCD with 400 row ), and the angle-resolution of k-space realized by the scanning of optical fiber head is ≤ 2 ° (based on 100 um optical fiber spectrometer); The collection angle range is ± 60 ° (100x visible objective with 0.9NA), or ± 50 ° (100x NIR objective with 0.85NA); The sample selection range is 10~180 um (100x objective); Compatible with PL\ Raman\SHG confocal measurement function. |