TITLE

Ridge waveguide distributed feedback lasers with electron beam defined gratings

AUTHOR(S)
Temkin, H.; Dolan, G. J.; Logan, R. A.; Kazarinov, R. F.; Olsson, N. A.; Henry, C. H.
PUB. DATE
January 1985
SOURCE
Applied Physics Letters;1/15/1985, Vol. 46 Issue 2, p105
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We describe a ridge waveguide distributed feedback laser operating at λ=1.5 μm. The ridge waveguide has been formed by liquid phase epitaxial overgrowth over a dielectric-defined narrow stripe. Second order diffraction gratings have been written using electron beam writing and transferred by reactive ion milling. cw threshold currents of these lasers vary from 80 to 150 mA and single mode operation over a temperature range of 60 °C has been demonstrated. Even under 1-GHz modulation the Bragg mode intensity is at least 3000 times greater than that of the residual Fabry–Perot modes.
ACCESSION #
9817031

 

Related Articles

  • A thick beam free electron laser. Fruchtman, Amnon // Physics of Fluids (00319171);Aug87, Vol. 30 Issue 8, p2496 

    A 3-D theory is presented for a free electron laser that employs an electron beam of a thickness comparable to both the wiggler wavelength and the waveguide radius. The time-independent and the linearized time-dependent cold fluid and Maxwell equations are expanded in a small parameter, which is...

  • Development of a Waveguide FEL Seeded in the 1–3 THz Range for Microbunching Experiment at the Neptune Laboratory. Sung, C.; Tochitsky, S. Ya.; Reiche, S.; Gottschalk, S. C.; Kimura, W. D.; Rosenzweig, J. B.; Pellegrini, C.; Joshi, C. // AIP Conference Proceedings;2006, Vol. 877 Issue 1, p895 

    IFEL and FEL techniques can be used to modulate an electron beam on the scale of the radiation wavelength. However, the lack of a high power radiation source in the 100–300 μm range hinders the progress on THz IFEL microbunching. In this paper, we discuss microbunching of an electron...

  • Comparison of Growth Rate of Electromagnetic Waves in Pre-bunched Cerenkov Free Electron Laser and Free Electron Laser. Bhasin, Anuradha; Bhatia, Bhupesh // International Journal of Computer Applications;8/15/2012, Vol. 52, p1 

    An electron beam passing through a slow wave structure is unstable to an electromagnetic perturbation whose phase velocity equals the velocity of the beam. This phenomenon of cerenkov emission is the basis of all slow wave devices. The increase in the growth rate by using a pre-bunched electron...

  • Gain and efficiency enhancement of a Cerenkov free electron laser by a prebunched electron beam in a dielectric loaded waveguide. Sharma, Suresh C.; Bhasin, Anuradha // Physics of Plasmas;May2007, Vol. 14 Issue 5, p053101 

    A density prebunched electron beam on a Cerenkov free electron laser (CFEL) offers considerable enhancement in gain and efficiency in a dielectric loaded waveguide. The growth rate, efficiency, and gain were evaluated based on experimentally known parameters relevant to the CFEL. It was found...

  • Coherent terahertz radiation from high-harmonic component of modulated free-electron beam in a tapered two-asymmetric grating structure. Zhang, Ya-Xin; Zhou, Yu-Cong; Dong, Liang; Liu, Sheng-Gang // Applied Physics Letters;9/17/2012, Vol. 101 Issue 12, p123503 

    Based on the mechanism of incoherent diffraction radiation excited by an electron bunch in a waveguide with periodic structure, this paper presents the concept of coherent terahertz (THz) radiation from the high-harmonic component of a modulated free-electron beam in a tapered two-asymmetric...

  • High Power Guiding and Electron Acceleration in Pure N5+ Plasma Channels. Goers, A. J.; Yoon, S. J.; Elle, J. A.; Hine, G. A.; Milchberg, H. M. // AIP Conference Proceedings;2016, Vol. 1777 Issue 1, p1 

    Ionization injection-assisted laser wakefield acceleration of electrons up to 120 MeV is demonstrated in a 1.5mm long pure helium-like nitrogen plasma waveguide. The guiding structure stabilizes the high energy electron beam pointing and reduces the beam divergence. Our results are confirmed by...

  • Wavefront Measurement for Laser-Guiding Diagnostic. Shiraishi, S.; Gonsalves, A. J.; Lin, C.; Nakamura, K.; Osterhoff, J.; Sokollik, T.; van Tilborg, J.; Geddes, C. G. R.; Schroeder, C. B.; Tóth, Cs.; Esarey, E.; Leemans, W. P. // AIP Conference Proceedings;11/5/2010, Vol. 1299 Issue 1, p127 

    The wavefront of a short laser pulse after interaction in a laser-plasma accelerator (LPA) was measured to diagnose laser-guiding quality. Experiments were performed on a 100 TW class laser at the LOASIS facility of LBNL using a hydrogen-filled capillary discharge waveguide. Laser-guiding with a...

  • Analysis of Capillary Guided Laser Plasma Accelerator Experiments at LBNL. Nakamura, K.; Gonsalves, A. J.; Panasenko, D.; Lin, C.; Tóth, Cs.; Geddes, C. G. R.; Schroeder, C. B.; Esarey, E.; Leemans, W. P. // AIP Conference Proceedings;1/22/2008, Vol. 1086 Issue 1, p147 

    Laser wakefield acceleration experiments were carried out by using a hydrogen-filled capillary discharge waveguide. For a 15 mm long, 200 μm diameter capillary, quasi-monoenergetic e-beams up to 300 MeV were observed. By de-tuning discharge delay from optimum guiding performance,...

  • Linear theory of the electron beam-wave-plasma interactions in a magnetized plasma waveguide. Liu, Shenggang; Wei, Yanyu; Yuan, XueSong; Yan, Yang // Journal of Applied Physics;3/1/2007, Vol. 101 Issue 5, p053309 

    The theoretical study on the electron beam-wave interactions in a plasma waveguide immersed in a finite magnetic field is given in the article, in which both the plasma and the electron beam are considered as special media. Making use of the constitutive transformation and the Lorentz...

  • Cherenkov Excitation of Spatial Waves by a Straight Nonrelativistic Electron Beam in a Plasma Waveguide. Kartashov, I. N.; Kuzelev, M. V. // Plasma Physics Reports;May2001, Vol. 27 Issue 5, p381 

    The problem of the excitation of plasma waves by a thin-walled annular electron beam in a waveguide filled entirely with a plasma is analyzed in the quasistatic approximation. The instability growth rates are derived and are studied as functions of the waveguide parameters. The evolution of...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics