What Is Quantum Electronics?

Quantum electronics is a discipline that studies the method of amplifying or generating coherent electromagnetic waves by the stimulated emission of quantum systems inside matter, and the properties and applications of their corresponding devices.

Quantum electronics

In the 1950s, microwave lasers were invented, and the discipline of quantum electronics began to be established. After the invention of the laser in the 1960s, the content of the subject expanded dramatically. Along with the research of lasers and lasers, many branch disciplines have been formed, such as laser physics, laser technology, nonlinear optics, laser spectroscopy, guided wave optics, integrated optics and holographic optics. These subdisciplines are often included in quantum electronics.

The basic principle of quantum amplification and oscillationThe core device of quantum electronics is microwave lasing

Devices that achieve quantum amplification or oscillation in the microwave band are called microwave lasers; in the optical band, they are called lasers.

Applications of quantum electronics Because of its novel principles, great potential, and rapid development, quantum electronics has received great attention in the field of electronics. A series of technologies in traditional electronics, such as amplification, oscillation, modulation, demodulation, sum and difference frequency, heterodyne reception, signal processing, etc., can be extended to optical frequency, which greatly enriches electronics and electronics. The content of technology. The original radio communication frequency band was already very crowded and could not meet modern needs. Laser is used as a carrier wave to transmit information. It has a huge information capacity and has opened up a vast world for communication. Optical fiber communication has entered the promotion stage. Laser is used for information storage, which has the characteristics of high density, large capacity and fast speed. The compact disc has been put into practical use. It is also possible to make a laser computer with extremely high speed. Laser used for micro-processing of semiconductors, integrated circuits, and electronic components has played an important role in the electronics industry. It has also made significant progress in the development of ultra-large-scale integrated circuits. Other applications include laser ranging, laser tracking, laser guidance, and laser display. Similar to the principle of the atomic frequency standard in the microwave band, using the atomic (molecular) spectral line as a reference to stabilize the laser frequency, an optical frequency atomic frequency standard with high stability has been made.

Lasers play a significant role in basic and applied research in physics, chemistry, and biology. For example, laser-induced nuclear fusion is a major topic that some countries are working on, and much progress has been made. Laser separation of uranium isotopes has entered an intermediate test stage. The role of laser in the research of optics, spectroscopy, chemistry and biology is beyond the reach of traditional light sources. Lasers have been used in industrial, agricultural, military, medical and other fields, and have also achieved many achievements.

China began to study microwave lasers in 1958, and the devices have reached a certain level. Laser research started in the early 1960s. Later, a wide range of research work has been carried out from basic to application, and it has been able to produce many types of laser devices. In the application of electronics, there have been more than ten field trials and trial lines for optical fiber communication. The use of laser rangefinders and laser theodolites has achieved results, and the development of optical discs has reached a certain level. The basic and applied research of laser in other disciplines has been carried out more generally, and it has begun to be widely used in various sectors of the national economy.