Praktikum Herstellung und Charakterisierung von Laser-Dioden

What it is about

In a block practical you will produce edge-emitting laser diodes for telecommunications and characterize them. You will work from layer-structure design through metal-organic chemical vapor deposition to photolithography, etching, deposition of contacts, thinning/spacer of the laser, and electrical and optical measurement.

What you will be able to do

• Calculate a suitable layer structure design for edge-emitting laser diodes
• Carry out the fabrication of III-V semiconductor layers using metal-organic chemical vapor deposition
• Practically apply cleanroom process steps (photolithography, wet chemical etching, deposition of contacts/insulation layers, thinning/spacers)
• Perform electrical and optical characterization of laser diodes (IV curves, output power, spectral behavior, temperature dependence)
• Evaluate measurement results and summarize them in a report

What the module consists of

• BlockpraktikumFabrication and characterization of laser diodes in the cleanroom and laboratory; practical execution of the process steps
• Hausaufgabe / VorgesprächPreparatory calculation of the laser stack and estimation of the theoretical performance data; access requirement for the practicum
• BerichtEvaluation and summary of the experimental results

Teaching method

• Theoretische BerechnungIndependent design of a laser structure before the practicum
• Praktische Arbeit im Reinraum und LaborIndependent application of fabrication processes and performing measurements
• Auswertung und BerichtDocumentation and assessment of the achieved results