For precise determination of angular position, particularly for the optical spectra applications, Holmarc has introduced a new high precision 0.0001 degree resolution spectrometer goniometer. It features low dark current linear Si-Photodiode detection unit for low light measurements. This allows users to work with the spectrometer goniometer in the wavelength range of 320-1100 nm (UV-VIS-NIR). This instrument is suitable for custom experiments and inspection of various optical components with precision. Open and flexible design facilitates quick modification of the instrument for custom applications.
This instrument can as well be used as a spectroscope for the observation and measurement of emission and absorption spectra. Other applications include measurement and determination of optical angles of prisms, thin film characterization through the measurement of reflection and transmission, Brewster's angle spectroscopy etc. When used with a prism, it helps to observe visible light dispersed by wavelength. When used with a diffraction grating and a gas discharge tube, we can observe the emission spectrum of various gases. The wavelengths of each electron transition in the spectrum can be calculated according to the angle of deflection of the light reflected by the grating.
|Telescope & Collimator Tube||:||200 mm Focal length|
|Detector Unit||:||Linear Si Photodiode|
|Software||:||Spectra RE scanning Soft. Version 1.020|
|Rotation||:||360 Degree Continuously Rotatable Telescope and Sample|
|Design||:||Precision Worm gear with double bearing|
|Resolution||:||0.0001 Degree for Telescope, 0.005 Degree for Sample Plate|
|Marking||:||Graduated rotary scale for visual reference|
|Removable collimator and telescope tubes|
|Horizontal and vertical adjustments for collimator & telescope|
|Precision slit 0 - 3mm adjustable with 10 micron resolution|
|Slit height is adjustable from 0 - 10 mm|
|Fiber optic coupling unit|
The focal length of the telescope and collimator tube is 200 mm. The graduated disc features a 360 degree scale with divisions of 0.5. The prism table is removable and features three point bearing leveling screws.
High precision low dark current (5pA) linear Si-Photodiode with an active area of 1.1 x 5.9 mm is used as detector in RE03DM Spectrometer Goniometer. It has spectral range of 320 - 1100 nm.
R.P of grating & prisms
Angle measurements of equilateral prism, wedge prism, biprism etc. Refractive index measurements.
Determination of Groove spacing Wavelength Biprism diffraction etc.
Polarization angle etc.
Holmarc's theta 2 theta stage consists of two rotation stages arranged in such a way that axis of rotation for both the stages are same. Both stages have preloaded ball bearing guides for wobble free rotation and positioning. 360º limitless movement is possible for inner and outer stages. Holmarc manufactures these stages with manual as well as motorized drive configurations.
Rotary graduations are provided in 1º / 2º with appropriate vernier graduations depending on the size of the stage. For motorized rotation stage, worm and gear is our standard drive mechanism. Surfaces of both stages are provided with M6 tapped holes for mounting components and sub-assemblies. Holmarc manufactures custom theta 2 theta stages to suit specific applications as well.