Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Robert G. Waarts"'
Publikováno v:
IEEE Journal of Quantum Electronics. 33:1673-1686
This paper reviews nonlinear quasi-phase-matching (QPM) waveguides and laser diodes with application to conversion of infrared laser diode wavelengths to the visible. The discussion of nonlinear QPM waveguides includes Ti-diffusion poled and E-field
Publikováno v:
IEEE Journal of Quantum Electronics. 30:2953-2960
We report the demonstration of dimensional noncritical phase matching, a phase-matched interaction length exceeding 10 mm, and an internal conversion efficiency of 204%/W for second harmonic generation of 976 nm radiation in a periodically poled, ann
Autor:
S. O'Brien, R. Parke, Donald R. Scifres, David F. Welch, Robert J. Lang, David G. Mehuys, K.M. Dzurko, Robert G. Waarts
Publikováno v:
IEEE Journal of Quantum Electronics. 29:2052-2057
High-power monolithically integrated flared amplifier master oscillator power amplifiers (MFA-MOPAs) that operate up to 2 W continuous wave (CW) in a single diffraction-limited lobe have been fabricated. The spectral output of the MFA-MOPA is single
Publikováno v:
IEEE Journal of Quantum Electronics. 29:1895-1905
Distributed-Bragg-reflector (DBR) ring oscillators are the first monolithic semiconductor lasers containing broad-area active regions which operate in a single mode to several times their threshold current. Orthogonally oriented diffraction gratings
Publikováno v:
IEEE Photonics Technology Letters. 5:281-284
Monolithic two-dimensional surface-emitting laser (SEL) arrays suitable for both optoelectronic and high power applications were fabricated utilizing a 4- mu m*450- mu m InGaAs single mode real refractive index guided gain cavity with 90 degrees and
Autor:
Vincent G. Dominic, D. Giltner, L.D. Garrett, Michael Eiselt, David G. Mehuys, Robert G. Waarts, R.W. Tkach
Publikováno v:
IEEE Photonics Technology Letters. 13:157-159
The benefits of distributed Raman amplification are demonstrated in a buried cabled field fiber. The performance improvement of 3.8 dB was achieved in a 5/spl times/120-km 10-Gb/s transmission experiment using 650-mW Raman amplification in each span
Autor:
J.C. Ehlert, J.M. Finlan, Cassarly B, David F. Welch, Robert G. Waarts, K.M. Flood, Chakmakjian Sh, D. Nam
Publikováno v:
Applied optics. 33(24)
We describe a novel phase-sensing and control system, based on phase-contrast imaging, operating within a linear external cavity laser consisting of 18 GaAlAs edge-emitting gain stripes. The system is used to achieve single-spatial-mode operation and
Publikováno v:
Optics letters. 19(21)
We have demonstrated one- and two-dimensional Er:YSGG microlaser arrays at 2.8-microm output wavelength with power levels up to 900 mW cw. The one-dimensional microlaser arrays are based on conventional edge-emitting laser diodes, and the two-dimensi
Autor:
William James Cassarly, Derek W. Nam, J. Michael Finlan, David G. Mehuys, Kevin M. Flood, Robert G. Waarts, John C. Ehlert, Dave Welch
Publikováno v:
Optics letters. 17(8)
Arrays of GaAlAs emitters have been diffractively coupled by using an external Talbot cavity to support a single spatial mode; however, element-to-element phase differences distort the desired spatial mode. To enable element-to-element phase correcti
Publikováno v:
Optics letters. 12(4)
Brillouin-gain spectra are measured for pure-silica core, GeO(2)-doped core, and P(2)O(5)-doped core single-mode fibers with different index profiles. A narrow-linewidth semiconductor laser operating at 828 nm is used as the pump light source. The sp