Many people are afraid that the imported QSI laser diode is very expensive, so they are afraid to choose. So is it really so expensive? What are its advantages compared with domestic ones? Refresh your understanding after reading this article.

General performance characteristics of QSI laser diode

The wavelength range is relatively complete: for example, about 635-680nm for red light and 780-940nm for near infrared.

Power bands are also diverse: from a few milliwatts (mW) to tens of mW (in the red band), even higher power IR bands are also available.

The integrated process coverage is relatively complete: it has its own capabilities from chip EPI epitaxy, manufacturing and packaging (PKG). Is the middle QSI stable or not? In what ways do you perform well?

Good consistency: the process is relatively mature, from epitaxy to chip to packaging its own system, which reduces the uncertainty of intermediate links, so the parameter difference between batches is small.

Good temperature range/reliability: several models can support the working temperature to about +60 and+70 C, and the design margin of threshold current and power degradation with temperature is reasonable. Some models of packaging are also relatively standard and have better heat dissipation paths.

Complete specifications/support for customized QSI: It is not only a fixed model, but also has products in multiple bands and power levels, and it can usually provide monitor diode, different package types, customized pins, etc., which is convenient for you to match the system in engineering.

The beam quality/mode control is relatively good: QSI model is "single mode", which means that the divergence angle is small and the spot quality is good, so it is suitable for precise measurement or industrial optical modules with high requirements on beam quality.

The above are the advantages of Korean QSI laser diode and the differences compared with domestic lasers. If you still don't understand, you can leave us a message at any time.