光电流光谱学(Opto-galvanic Spectroscopy)是近几年新出现的一门激光光谱技术。它可以解决许多常规光谱无法解决的问题。虽然在半个世纪前就发现了光电流效应,但却一直没有得到多少应用。到六十年代以后,随着激光特别是可调谐激光的出现和发展,为进一步研究光电流效应提供了一个较为理想的光源。1976年美国国家标准局的Green等和Bridges用可调谐染料激光辐照放电管研究光电流效 Opto-galvanic spectroscopy is a new emerging laser spectroscopy technique in recent years. It can solve many problems that conventional spectroscopy can not solve. Although the photocurrent effect was discovered half a century ago, it has not been widely used. By the 1960s, with the advent and development of lasers, especially tunable lasers, it provided an ideal light source for further studying photocurrent effects. In 1976, Green et al. And Bridges of the U.S. National Bureau of Standards studied the photocurrent efficiency by using a tunable dye laser to irradiate the discharge tube