The high-resolution Doppler-free optogalvanic spectra of Ca+ and Ca we
re observed using a commercial hollow-cathode lamp and a single-mode c
w ring Ti:sapphire laser or a dye laser. The measured full width at ha
lf-intensity-maximum (FWHM) of the Ca+ Doppler-free component was 167
MHz, which is sufficient for calibrating the wavelength for the laser
cooling of Ca+ ions. The amount of collision broadening in the Ca+ spe
ctrum was much greater than that in the Ca spectrum.