DBR waveguide laser in erbium-diffusion-doped LiNbO3

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DBR waveguide laser in erbium-diffusion-doped LiNbO3

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The first integrated optical DBR waveguide laser with dry-etched Bragg grating (345 nm period) is demonstrated in Er-diffusion-doped Z-cut LiNbO3 with Ti-diffused waveguide. Three different resonator configurations have been investigated. The best device has a threshold of 40 mW coupled pump power (λp = 1484 nm) and emits up to 2 mW CW output power at λs = 1531 nm with a typical bandwidth of 3.6 GHz.

Inspec keywords: optical pumping; distributed Bragg reflector lasers; solid lasers; titanium; erbium; integrated optics; laser cavity resonators; waveguide lasers; diffraction gratings; laser transitions; lithium compounds

Other keywords: ζ-cut LiNbO3; 3.6 GHz; DBR waveguide laser; 2 mW; 40 mW; dry-etched Bragg grating; integrated optical waveguide laser; resonator configurations; 345 nm; LiNbO3:Ti,Er; Er-diffusion-doped LiNbO3; 1484 nm; 1531 nm; Ti-diffused waveguide

Subjects: Solid lasers; Optical waveguides; Optical waveguides and couplers; Integrated optics; Design of specific laser systems; Gratings, echelles; Integrated optics; Lasing action in other solids; Laser resonators and cavities; Laser resonators and cavities

References

    1. 1)
      • Söchtig, J., Schütz, H., Widmer, R., Lehmann, H.W., Gross, R.: `Grating reflectors for erbium-doped lithium niobate waveguide lasers', Proc. SPIE Conf. on Nanofabrication and Device Integration, 1994, 2213, p. 98–107.
    2. 2)
      • Baumann, I., Brinkmann, R., Buchal, Ch., Dinand, M., Fleuster, M., Holz-Brecher, H., Sohler, W., Suche, H.: `Er-indiffused waveguide waveguides in LiNbO', 3–14, ECIO'93, 1993, Neuchatel.
    3. 3)
      • H. Suche , I. Baumann , D. Hiller , W. Sohler . Mode-locked Er:Ti:LiNbO3-waveguide laser. Electron. Lett. , 12 , 1111 - 1112
    4. 4)
      • Baumann, I., Johlen, D., Sohler, W., Suche, H., Tian, F.: `Acoustically tunable Ti:Er:LiNbO', ECOC'94, 1994, Firenze, Post deadline paper.
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