of tunable diode laser technology

Tunable diode lasers of lead -salt materials have been demonstrated to be a useful tool for trace gas analysis, high resolution spectroscopy and infrared astronomy studies. Only recently, applications such as optogalvanic spectroscopy, spectroscopy of molecules in solids and on surfaces, and industrial process control have been explored. This paper reviews the recent advances in tunable diode laser technology to achieve high temperature, single mode operation for these applications. The use of the molecular beam epitaxy technique for the fabrication of heterojunctio n structure, stripe geometry diode lasers will be emphasized.