M. Gorrisneveux et al., A 2-WAVELENGTH, PASSIVELY SELF-INJECTION LOCKED, CW TI3+AL2O3 LASER, IEEE journal of quantum electronics, 31(7), 1995, pp. 1253-1260
We have demonstrated that passive self-injection control is very effec
tive in a CW Ti3+ : Al2O3 laser to produce high efficiency (eta simila
r to 15%), narrow-line, two-wavelength emission. Light reinjection is
achieved with an original high-resolution two-wavelength selector comb
ining an interference wedge and a grazing incidence grating, The devic
e operates outside the main nonselective laser cavity, thus avoiding i
nsertion losses and optical damage problems, A 1.5-W, background free,
total output power has been obtained simultaneously at two narrow las
er lines (fwhm: 8 pm), independently tunable over 50 nm, The two laser
lines can be emitted in a single beam or in two separated beams, Self
-injection wavelength control has been demonstrated both for linear an
d for ring laser cavities, In the latter case, unidirectional behavior
is also obtained in the same way, Single-step (5s(2)S(1/2) - 5p(2)P(1
/2,3/2)) and two-step (5s(2)S(1/2) - 5p(2)P(3/2) - 5d(2)D(3/2,5/2)) ex
citation of atomic rubidium vapor has been performed with our original
laser device.