Compact diode laser trace gas system with an optical fiber coupled flexible high-finesse external cavity based on cavity ringdown spectroscopy

摘要

A fiber coupled high-finesse external cavity diode laser for cavity ringdown spectroscopy was successfully demonstrated. The sensitivity of 1×10{sup}(-7) cm{sup}(-1) was achieved in a 1 cm{sup}3 remotely located ringdown cavity as a sensor head.