Abstract
The effect of three types of experimental laser noise on conventional thermal lens spectroscopy are considered. Theoretical calculations of noise and signal-to-noise ratio as a function of aperture size are included to determine ideal aperture dimensions for systems limited by laser pointing instabilities, flicker noise, and/or shot noise. Experimentally determined noise curves are also presented and discussed in the context of the theoretical results. The results show that for most thermal lens configurations based on lock-in detection, optimum S/N is obtained at an aperture-to-beam-size ratio of 0.6.
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription