Solid-State Tunable kHz Ultraviolet Laser for Raman Applications

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Abstract:

Performance characteristics are described for a kilohertz solid-state laser source for resonance Raman spectroscopy. Narrow line excitation in the 205-230 nm region is provided by quadrupling a titanium: sapphire laser which is pumped by the second harmonic of a Q-switched YLF laser. The combination of tunability, narrow line, high average power, and good stability makes this laser suitable for ultraviolet resonance Raman (UVRR) applications. UVRR spectra of hemoglobin, excited at 229 nm, are as high in quality as those produced by continuous-wave intracavity frequency-doubled Ar+ laser excitation. Raman excitation profiles are reported for aromatic acids in aqueous solution and in hemoglobin.

Keywords: HEMOGLOBIN; RAMAN EXCITATION PROFILE; RESONANCE RAMAN; ULTRAVIOLET LASER; UV RESONANCE RAMAN

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702991945669

Publication date: October 1, 1999

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