Solid-State Tunable kHz Ultraviolet Laser for Raman Applications
1999; SAGE Publishing; Volume: 53; Issue: 10 Linguagem: Inglês
10.1366/0003702991945669
ISSN1943-3530
AutoresXiaojie Zhao, Ruopian Chen, Charbel Tengroth, Thomas G. Spiro,
Tópico(s)Protein Interaction Studies and Fluorescence Analysis
ResumoPerformance 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.
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