Abstract
High-resolution spectroscopy requires light sources with narrow bandwidth, high stability, and broad tunability. In the orange part of the spectrum, only dye lasers and optical parametric oscillators are at present available as tunable coherent light sources [1] However, for many applications, these laser systems have a too broad spectrum and too large power fluctuations unless complex configurations are constructed. Another approach to get orange laser output is by sum-frequency mixing (SFM) of radiation al 1064 nm with radiation between 1300 and 1400 nm This has previously been efficiently obtained with a resonant external cavity, but the scheme did not permit frequency tuning of the output signal [2] Here, we report on a simple approach to achieve ultrastable, tunable.
© 2000 IEEE
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