Abstract

To study the high vibrational states of molecules, dye lasers have generally been used. However, the noise level of dye lasers is relatively high, and the high-frequency modulation is limited. Recently, visible and near-IR GaAlAs diode lasers have been available for spectroscopy. These diode lasers have favorable features: ease of handling; narrow linewidth; wide wavelength range (750-900 nm); low-amplitude noise (-100 dB at 100 kHz); and fast response.¹

© 1987 Optical Society of America