Novel tunable semiconductor lasers using continuously chirped distributed feedback gratings with

Hillmer, H.; Zhu, H.-L.
October 1994
Applied Physics Letters;10/24/1994, Vol. 65 Issue 17, p2130
Academic Journal
Presents experimental and theoretical results obtained from a type of tunable two- and three-section semiconductor distributed feedback (DFB) laser using tailored chirped DFB gratings. Definition of chirped gratings; Achievement of arbitrary and continuous chirping functions; Application of the method for tunable lasers with optimized bending shapes.


Related Articles

  • Semiconductor lasers with uniform longitudinal intensity distribution. Schrans, Thomas; Yariv, Amnon // Applied Physics Letters;4/16/1990, Vol. 56 Issue 16, p1526 

    Power-dependent nonuniform longitudinal intensity distribution leading to spectral and spatial instabilities is a major problem in semiconductor lasers. It is shown theoretically that a proper choice of the longitudinal distribution of the gain as well as that of the magnitude of the grating...

  • Design considerations of large aperture perpendicular gratings semiconductor ring lasers. Hardy, A.; Dzurko, K.M.; Welch, D.F.; Scifres, D.R.; Lang, R.J.; Waarts, R. // Applied Physics Letters;3/1/1993, Vol. 62 Issue 9, p931 

    Presents the design considerations of large aperture perpendicular gratings semiconductor ring lasers. Analysis on the laser geometry; Contents of the laser cavity; Operation of lasers at a single mode order with modal discriminations.

  • Wavelength switching in multicavity lasers. Kanjamala, A.P.; Levi, A.F.J. // Applied Physics Letters;7/21/1997, Vol. 71 Issue 3, p300 

    Uses coupled cavity effects to sequentially switch lasing wavelength at a constant injection current. Advances in fiber Bragg grating technology; Features of the antireflection coated semiconductor laser diode; Role of residual reflectivity from the antireflection coating in determining device...

  • High-power (>0.9 W cw) diffraction-limited semiconductor laser based on a fiber Bragg grating.... Cornwell Jr., Donald M.; Thomas, Heather J. // Applied Physics Letters;2/10/1997, Vol. 70 Issue 6, p694 

    Examines the diffraction-limited semiconductor laser based on a fiber Bragg grating external cavity. Advantage of fiber pigtailing in the semiconductor amplifier; Comparison between Bragg and bulk diffraction gratings; Injection of frequency-selective feedback into the amplifier.

  • Photonic-crystal distributed-feedback lasers. Vurgaftman, I.; Meyer, J. R. // Applied Physics Letters;3/12/2001, Vol. 78 Issue 11, p1475 

    The far-field emission characteristics and spectral purity of photonic-crystal distributed-feedback (PCDFB) lasers, in which the grating is defined on a two-dimensional lattice that is tilted with respect to the facets, are analyzed using a self-consistent time-domain simulation. It is shown...

  • Reduced temperature dependence of threshold current by broadband enhanced feedback: A new.... Tsang, W.T.; Choa, F.S. // Applied Physics Letters;1/6/1992, Vol. 60 Issue 1, p18 

    Presents an approach to reduce the rate of threshold current and external quantum efficiency in a semiconductor laser. Correlation between temperature and quantum efficiency degradation rate; Use of multilayer coatings and chirp gratings at the lasing wavelength; Basis on the total laser cavity...

  • Dynamics of Nonequilibrium Gratings Induced in Silicon Films by Femtosecond Laser Pulses. Galyautdinov, M. F.; Lobkov, V. S.; Moiseev, S. A.; Negrashov, I. V. // Semiconductors;Dec2001, Vol. 35 Issue 12, p1366 

    Relaxation of the dynamic gratings formed by nonequilibrium charge carriers in thin single-crystal silicon films during femtosecond laser excitation was studied. The case of the ultimate concentration of carriers (N � 10[sup 21] cm[sup -3]) is considered. Ambipolar diffusion and Auger...

  • Narrow-linewidth operation of broad-stripe single quantum well laser diodes in a grazing.... Gavrilovic, P.; Chelnokov, A.V. // Applied Physics Letters;6/15/1992, Vol. 60 Issue 24, p2977 

    Describes an external-cavity semiconductor laser employing a grazing-incidence grating and 100-micrometer stripe gain-guided laser diodes. Use of multimode diodes in increasing the output power; Optimization of facet coatings to increase the single-mode power; Maximization of grating feedback...

  • Study and analysis of submicron-period grating formation on polymers ablated using a KrF laser.... Dyer, P.E.; Farley, R.J. // Applied Physics Letters;6/20/1994, Vol. 64 Issue 25, p3389 

    Demonstrates the formation of submicron-period gratings in polyethylene terephthalate and polyimide films using a krypton fluoride laser irradiated phase mask. Dominance of d-spaced gratings on the ablated polymers; Average fluence behind the mask; Distribution of the local energy density.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics