TITLE

Unstable resonator with phase-unifying coupler for high-power lasers

AUTHOR(S)
Yasui, Koji; Tanaka, Masaaki; Yagi, Shigenori
PUB. DATE
February 1988
SOURCE
Applied Physics Letters;2/15/1988, Vol. 52 Issue 7, p530
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A novel unstable resonator with a phase-unifying output coupler has been developed. The output coupler structured with a partial-reflection region in its center surrounded by an antireflection region unifies the phases of laser beams passing through these regions. Thus, a near-Gaussian far-field pattern beam has been obtained with a divergence full-angle of 1.08 mrad on the application to a high-power cw CO2 laser.
ACCESSION #
9826000

 

Related Articles

  • Compact dual-band bandpass filter using stepped impedance resonators. He-Ming Xu; Zhong-Yin Xiao; Hong-Hong Hu // Microwave & Optical Technology Letters;May2008, Vol. 50 Issue 5, p1292 

    A new dual-band bandpass filter (BPF) for 2.4/5.2 GHz WLAN systems using two-stepped impedance resonators is presented. With new properly coupled structure, this filter appears very compact and easy to be fabricated. Measured results show that this BPF has low insertion loss of 0.3 dB at 2.4 GHz...

  • New perturbation technique to generate split modes in electromagnetically coupled notch filters using different ring resonators. Krishna, J. V. S. Hari; Karekar, R. N.; Aiyer, R. C. // Microwave & Optical Technology Letters;Jul2008, Vol. 50 Issue 7, p1747 

    A new method for generating split modes in ring resonators, used as notch filters with three geometries (square, triangular, and circular), is introduced by varying the feed position of electromagnetically coupled feed line. The resonators are fabricated (all at 2.4 GHz nominally) on TMM4...

  • A novel differential bandpass filter based on double-sided parallel-strip line dual-mode resonator. Jin Shi; Jian-Xin Chen; Quan Xue // Microwave & Optical Technology Letters;Jul2008, Vol. 50 Issue 7, p1733 

    A differential bandpass filter based on double-sided parallel-strip line (DSPSL) dual-mode resonator is proposed in this article. This differential bandpass filter makes use of the inherent differential feature of DSPSL to construct feeding ports and resonating unit. This filter has the...

  • Design of coupling structures for groove guide resonators. Bechteler, Thomas F.; Kustepeli, Alp; Bechteler, Sevinc A. // Microwave & Optical Technology Letters;May2008, Vol. 50 Issue 5, p1406 

    Three different coupling structures for a groove guide resonator operating at 10 GHz are investigated. First, propagatable modes are determined analytically. Then, the efficiency of the coupling structures is investigated by means of the method of moments and measurements. Finally, a groove...

  • Imaging of in- and out-of-plane vibrations in micromechanical resonator. Holmgren, O.; Kokkonen, K.; Mattila, T.; Kaajakari, V.; Oja, A.; Kiihamäki, J.; Knuuttila, J. V.; Salomaa, M. M. // Electronics Letters;2/3/2005, Vol. 41 Issue 3, p121 

    Vibrations in a micromechanical 13.1 MHz bulk acoustic mode silicon resonator have been imaged with a scanning Michelson laser inter- ferometer. A novel detection scheme utilising the Michelson inter- ferometer is developed, which enables imaging the in-plane vibrations in addition to the...

  • Tunable and multiple-wavelengths/temporal output from gain-switched diode laser and a four Bragg-grating Fiber. Rafailov, E. U.; Cormack, I. G.; Floreani, F.; Zhang, L.; Bennion, I.; Sibbett, W. // Applied Physics Letters;8/9/2004, Vol. 85 Issue 6, p861 

    We demonstrate spectral narrowing and selective tuning of the picosecond pulse outputs from an injection-seeded, gain-switched diode laser that is simultaneously coupled to four output fibers with different Bragg-grating resonators. A single-, dual-, and triple-wavelength and temporal pulse...

  • Numerical investigation on compact multimode dielectric resonator antennas of very high permittivity. Rotaru, M.; Sykulski, J.K. // IET Science, Measurement & Technology;May2009, Vol. 3 Issue 3, p217 

    An electrically small antenna based on a dielectric resonator antenna (DRA) is investigated. Two well-known simulation techniques, the finite element method and the finite integration technique have been applied to study a low volume high permittivity DRA. It is demonstrated that the design of a...

  • ULTRA-COMPACT SPECTRAL SLICER DEVICES BASED ON MICRORING RESONATORS. TAN, FREDDY SUSANTO; KELDERMAN, HENRY; DRIESSEN, ALFRED // Journal of Nonlinear Optical Physics & Materials;Jun2005, Vol. 14 Issue 2, p273 

    In Wavelength Division Multiplexing (WDM), access network spectral slicer devices in connection with a broadband light source are attracting low-cost alternatives for the laser diodes that are required for transmission in the desired wavelength channels. The proposed ultra-compact spectral...

  • PERTURBATION THEORY FOR A CAVITY RESONATOR WITH A BI-ISOTROPIC SAMPLE: APPLICATIONS TO MEASUREMENT TECHNIQUES. Tretyakov, Sergei A.; Viltanen, An J. // Microwave & Optical Technology Letters;4/1/92, Vol. 5 Issue 4, p174 

    Resonator measurement techniques for exploring electromagnetic parameters of bi-isotropic (nonreciprocal chiral) materials are discussed. The bi-isotropic materials are the most general linear isotropic materials, and the corresponding constitutive relations are governed by four parameters. A...

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