Title :
Erbium-doped single- and double-pass Ti:LiNbO3 waveguide amplifiers
Author :
Brinkmann, Ralf ; Baumann, Ingo ; Dinand, Manfred ; Sohler, Wolfgang ; Suche, Hubertus
Author_Institution :
Angewandte Phys., Paderborn Univ., Germany
fDate :
10/1/1994 12:00:00 AM
Abstract :
Single-pass and double-pass Er-diffused Z- and X-cut Ti:LiNbO3 waveguide amplifiers, optically pumped at λ p≈1484 nm, have been investigated. With a 48 mm long Z-cut amplifier device, Er-diffusion doped at 1100°C, 6.7 dB (coupled pump power Pp,c=170 mW) and 14.7 dB (Pp,c=90 mW) net small-signal gain have been achieved with a single-pass and a double-pass configuration, respectively, at the signal wavelength λs=1531 nm. A Z-cut sample doped at 1135°C showed a considerably improved behavior. 11.3 dB single-pass net small-signal gain has been obtained (Pp,c=170 mW; sample length 5.7 cm). Theoretical calculations predict gain figures up to 20 dB in single-pass and 40 dB in double-pass Er:Ti:LiNbO3 amplifiers with increased (realistic) lengths of 10 cm
Keywords :
erbium; lithium compounds; optical pumping; optical waveguides; solid lasers; titanium; 11.3 dB; 1100 degC; 1135 degC; 14.7 dB; 1484 nm; 1531 nm; Er-diffusion doped; Er-doped double-pass Ti:LiNbO3 waveguide amplifiers; Er-doped single-pass Ti:LiNbO3 waveguide amplifiers; LiNbO3:Er,Ti; X-cut Ti:LiNbO3 waveguide amplifiers; Z-cut amplifier device; Z-cut sample; coupled pump power; double-pass Er:Ti:LiNbO3 amplifiers; double-pass configuration; gain figures; optically pumped; sample length; signal wavelength; single-pass configuration; single-pass net small-signal gain; theoretical calculations; Erbium; Erbium-doped fiber amplifier; Integrated optics; Nonlinear optics; Optical amplifiers; Optical filters; Optical pumping; Optical waveguides; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Quantum Electronics, IEEE Journal of
