Electro-optical bench

Location: NMR Lab
Responsible: Pedro Marques de Almeida

Description: The optical bench is composed by two lasers with different wavelength (red and orange), all the optical material such as rails, mounts, polarizers, beam splitters, sample holders, etc. Is equipped with photodetectors, a function generator and an ampli-fier, all of the connected to a digital oscilloscope that is linked to a computer. The opti-cal bench permits optical and electro-optical measurements being focused on liquid crys-tals and liquid crystal devices.

- Several Optical components mainly from Melles Griot and TechSpec
- Analogue Oscilloscope (Bandwidth: 50 MHz, Analog Channels: 2, Max Sample Rate: 250 GS/s, Max Memory Depth: 0.004 Mpts)
- Digital Oscilloscope (A differential 4 channel, 50 MHz USB oscilloscope; Differential inputs; 12, 14, 16 bit resolution, 0.3 % DC accuracy; Up to 50 MS/s sampling, 50 MHz bandwidth; 128 KSamples memory per channel)
- Function / Arbitrary Waveform Generator, 20 MHz (Fully compliant to LXI Class C specification; 20 MHz Sine and Square waveforms; Pulse, Ramp, Triangle, Noise, and DC waveforms; 14-bit, 50 MSa/s, 64 k-point arbitrary waveforms; AM, FM, PM, FSK, and PWM modulation type; Linear & logarithmic sweeps and burst operation; 10 mVpp to 10 Vpp amplitude range; Graph mode for visual verifica- tion of signal settings; Connect via USB, GPIB and LAN)
- Signal Amplifier (Number of Digital Coaxial Inputs: 1; Number of Digital Optical Inputs: 2; Number of Analog Audio Inputs: 2; RMS Output Power: 100 W; Total Harmonic Distortion THD    0.9%)