一、概述: 自六十年代以来,随着激光器的问世,相应的激光医疗仪器也随之出现。激光技术与传统的中医针炙相结合,即形成目前临床普遍应用的光针。用光针治病,既有针的作用,又有光的作用,且无痛苦,这在国际针炙热的今天,格外受到人们的青睐。但气体激光器体积大,光斑小,对于比较复杂的组合频率调制难以达到要求。近年,随着激光技术的发展,又出现了用半导体激光器制作的医疗仪,这种仪器克服了气体激光器的不足,但价格昂贵,难以普及。针对以上情况,北大物理系以特种半导 First, an overview: Since the 1960s, with the advent of lasers, the corresponding laser medical equipment also appears. Laser technology combined with traditional Chinese medicine acupuncture, that is, the formation of the clinical application of light needle. With light acupuncture, both the role of acupuncture, but also the role of light, and no pain, which in today’s hot needle acne, especially by people of all ages. However, gas lasers are bulky and have a small spot size, making it difficult to meet the requirements of the more complex combination frequency modulation. In recent years, with the development of laser technology, medical devices made of semiconductor lasers have emerged, which overcomes the disadvantages of gas lasers but is expensive and difficult to popularize. In response to the above situation, Peking University Department of Physics with special semiconductors