The inter-band cascade laser pointer won the Prism Photonics Innovation Award selected by the International Society of Optical Engineering and jointly evaluated in 2012. The award ceremony was held in San Francisco at the end of January 2012. In recognition of the launch of the innovative product laser pointer, the wavelength covers the entire wavelength range from 3000nm to 6000nm. The main characteristics of the laser: At present, the parameter characteristics of the ICL laser are very similar to the parameters of the near-infrared DFB laser, with lower threshold current, normal temperature operating temperature, higher output power, and lower heat dissipation. The following figure shows the typical characteristic parameters of the device in the 46xx nm and 52xx nm wavelength ranges. It can be seen that the ICL laser has a typical output power of 5mW at an operating temperature of 20°C, which is very similar to the ordinary near-infrared DFB. Parameter characteristics, and the circuit power consumption threshold is only 150mW, with very low power consumption.
Comparison of laser, DFB laser and QCL laser radiation principle: DFB, ICL, QCL radiate light in different wavelength ranges from different substances. Different emission wavelengths are based on different material radiation. As shown in the figure below, blue represents chip materials for VCSEL and DFB structures, red represents chip materials for ICL structures, and green represents chip materials for QCL structures. The basic composite solution from visible to infrared radiation. DFB, ICL, QCL laser emission wavelength and threshold power density. Threshold power density is a measure of the amount of energy required to excite the green laser pointer. A higher threshold power density means that the same light output power requires higher input current, higher energy consumption, and more heat. As shown in the figure above, black represents the DFB laser, and the threshold power density is getting higher and higher at 2 to 3.5 μm, and green and blue represent the ICL laser. Threshold power density is getting higher and higher at 3~7μm. Red represents QCL laser. Threshold power density is higher than DFB and ICL. In particular, it becomes particularly high within 4 μm.