Office
The office is located in NANO Building 301. Each seat is equipped with a chair, drawer, white board and small lamp. The spacious office is equipped with a microwave, hot water.
FWP6 Probe Station
The FWP6 Probe Station is a cryogenic manipulated-probe testing station used for non-destructive electrical testing of devices on full and partial wafers up to 4 inches in diameter. Cryogenic operation is based on a continuous-transfer cryogenic refrigerator designed by Desert Cryogenics specifically for the probe station. These systems are versatile and state-of-the-art, providing temperatures from 4.2 K to 475 K. The system is designed to be safe, easy to use, and easily computer controlled.
FTIR (Fourier Transform Infrared Spectroscopy)
A Nicolet iS50 FT-IR spectrometer (ThermoFisher Scientific), equipped with a liquid nitrogen-cooled mercury cadmium telluride (MCT) detector and a KBr beam splitter, is utilized to cover a broad spectral range from 1 μm to 16 μm. For high-resolution, low-temperature optical characterizations, a cryostat is routinely employed, enabling precise measurements of both optically and electrically pumped devices. This system is primarily used for the comprehensive characterization of mid-infrared (Mid-IR) lasers and photodetectors, supporting advanced performance evaluation across a wide range of operating conditions.
IR-MIR-PL, Optical pumping Laser System
A custom-built infrared photoluminescence (PL) spectroscopy system has been developed to perform PL spectral measurements. The setup integrates both photoluminescence and optically pumped laser measurement capabilities within a compact design. Excitation is provided by two 532 nm laser sources — a continuous-wave laser and a pulsed laser —- CW laser capable of delivering up to 500 mW of power and the pluse laser to 50kHZ of frequency, 20μJ of energy. For detection, the system employs a range of detectors, including InSb, thermoelectrically cooled InGaAs, and Si detectors, enabling broad spectral coverage. The setup supports both conventional off-axis PL measurements and optically pumped laser configurations. A cryostat compatible with microscopy facilitates temperature-dependent PL measurements, allowing investigation of micro-scale devices. Additionally, the optically pumped laser system is equipped with a cylindrical lens to optimize beam shaping and an automated power control module to ensure precise and stable excitation conditions.