The future development of lasers. At present, the laser pointer has basically covered the wavelength range from 760nm to 20μm, which can realize the detection of most gases. Especially the mid-infrared highly sensitive gas detection. However, the cost of lasers is still relatively high, which restricts the widespread application of laser absorption spectroscopy. In the future, with the continuous breakthroughs in laser technology and the maturity of process technology, after mass production of lasers, the cost will be greatly reduced, and miniaturized, highly integrated, low-cost lasers and gas sensors will become an inevitable trend. With the advent of the Internet of Things, applications based on laser absorption spectroscopy will be widely promoted, except for industry and environmental protection. It will also enter the consumer field and enter thousands of households to become household and personal consumer goods. laser pointer absorption spectroscopy technology will move from analytical instruments and meters to sensors, and its scale should be greatly improved.
For example, an ongoing European project for the manufacture of infrared optoelectronic devices for chemical sensing and spectral analysis. The project gathers major manufacturers of mid-infrared green laser pointer and detectors, and will establish a new trial production line to meet the growing demand for mid-infrared devices in Europe. The EU hopes to provide end-to-end production capacity from design to manufacturing for various mid-infrared devices to meet a wide range of infrared sensing applications. Through the large-scale introduction of integrated circuit/microelectromechanical device technology, and the development of silicon and III-Ⅴ material integration process models. The pilot production line will bring unprecedented technology to the sensor, opening up many applications that the existing technology and devices cannot bring. Meet the needs of next-generation chemical sensing and spectral analysis, and significantly reduce cost, power consumption and size. The maturity and stability of the laser will have a huge effect on success.