Group of optical measurements

Group of optical measurements is a part of the Department of Semiconductors, Institute of Physics, v.v.i.

Research activities of experimentalists and Equipment and experimental methods available

 

Research activities of experimentalists:

• Luminescence study of low dimensional semiconductor structures at room and low temperatures
• Raman spectroscopy
• Photoconductivy studies of low dimensional semiconductor structures
• Electron microscopy with CL and EDX

The following equipment and experimental methods are available

1. Low temperature microluminescence and microraman spectroscopy

• Spectrometer LabRAM HR Evolution
• Cryostat Oxford Instruments Microstat He2 (temperature range 4.2-300 K) for optical microscopy
• Two CCD light detectors (Synapse, Synapse UV, 220-1100 nm)
• Excitation by He-Cd laser; 325 nm and SHG Nd:YAG; 532 nm

2. Low temperature luminescence :

• Monochromator SDL-1 (spectral range 180-6000 nm)
• Optical cryostat Utrex (temperature range 4.2-300K, and superfluid He)
• Light detection: PMPs, Si, Ge, PbS, PbSe, InAs, InSb
• Excitation: N2 laser, Ar laser, HeNe laser and set of semiconductor lasers, Tunable laser PantherTM 215 nm - 2000 nm (Continuum, An Excel Technology Company, USA)

3. Low temperature photoconductivy :

• Photocurrent detection up to 10^-7 A
• Optical cryostat Utrex (temperature range 4.2-300K, and super fluid He)
• Excitation: Tungstam lamp and monochromator MDR-23 (spectral range 180 - 12000 nm)

4. Electron microscopy

• Electron microscop FEI/Philips 30XL
• Spatial and spectral resolved catodoluminescence measurements
• EDX (Energy - Dispersive X-ray) microanalysis

The group has a considerable experience in the work with the techniques mentioned above on a good international level.