Polarization orthogonalizer for a pair of laser beams with nearly equal frequencies

Yim, Sin Hyuk; Yoon, T. H.; Cho, D.
December 2008
Review of Scientific Instruments;Dec2008, Vol. 79 Issue 12, p126104
Academic Journal
We have demonstrated a device to produce an overlapping pair of orthogonally polarized laser beams with a 3 GHz frequency offset out of a single laser beam containing the two frequency components with the same linear polarization. Our design is based on a Michelson interferometer formed by a polarizing beam splitter and two quarter-waveplates. Such a device can be used to make the polarization states of a carrier and a sideband produced through modulation mutually orthogonal. An orthogonally polarized pair of coherent laser beams can be used for an interferometric measurement of a small displacement in a heterodyne scheme or to produce a large-contrast coherent population trapping signal from alkali metal atoms. As a demonstration we used the device to achieve 40% contrast for a coherent population trapping signal from a rubidium vapor cell.


Related Articles

  • Generation of compact radially polarized beam at 850 nm in vertical-cavity surface-emitting laser via plasmonic modulation. Cai, Likang; Zhang, Jing; Bai, Wenli; Wang, Qing; Wei, Xin; Song, Guofeng // Applied Physics Letters;11/15/2010, Vol. 97 Issue 20, p201101 

    We propose a convenient approach for generating compact radially polarized laser beam by integrating concentric gold rings on the surface of a vertical-cavity surface-emitting laser. Due to the polarization selection of the surface plasmon polariton mode excited by the gold rings, a radially...

  • Single high-order round-trip feedback effects in orthogonally polarized dual frequency laser. Zeng, Z.; Zhang, S.; Tan, Y.; Zhang, P.; Li, Y. // Applied Physics B: Lasers & Optics;May2012, Vol. 107 Issue 2, p333 

    We present the effects of single high-order round-trip feedback in orthogonally polarized dual frequency laser. The high quality intensity fringes of two orthogonally polarized lights are obtained, which are cosine-like. The fringe frequency of a single high-order round-trip feedback is five...

  • Nonlinear mode coupling in birefringent fiber: Application to optical pulse reshaping. Kitayama, Ken-ichi; Kimura, Yasuo; Seikai, Shigeyuki // Applied Physics Letters;1984, Vol. 45 Issue 8, p838 

    It is theoretically shown that intensity dependent mode coupling is induced by nonlinear birefringence between two orthogonally polarized modes in optical fibers in such way that the weak light field polarized along the slow axis of the birefringent fiber couples more strongly to the other mode...

  • Near-field evidence of local polarized emission centers in InGaN/GaN materials. Micheletto, Ruggero; Allegrini, Maria; Kawakami, Yoichi // Applied Physics Letters;11/23/2009, Vol. 95 Issue 21, p211904 

    We study the optical polarization properties of confined structures in InGaN/GaN single quantum well devices. Using a near-field optical setup we investigated the photoluminescence maps with a polarization-modulation method. If the optical emissions have a preferred polarization orientation, our...

  • Magnetic microstructures of neodymium in Nd2Fe14B permanent magnet by hard x-ray magnetic-circular dichroism using focused x-ray beam. Ueda, Kazuhiro; Nambu, Akira; Yoneyama, Akio; Sugawara, Akira; Heike, Seiji; Hashizume, Tomihiro; Suzuki, Hiroyuki; Komuro, Matahiro // Applied Physics Letters;7/12/2010, Vol. 97 Issue 2, p022510 

    Magnetic microstructures of neodymium (Nd) in a Nd–Fe–B magnet were investigated by the hard x-ray magnetic circular dichroism (HXMCD) with a focused synchrotron circular-polarized beam (<2 μm). Magnetic domain and Nd concentration were simultaneously acquired by measuring Nd...

  • Polarization beam splitter based on a two-dimensional photonic crystal of pillar type. Xianyu Ao; Liu Liu; Wosinski, Lech; Sailing He // Applied Physics Letters;10/23/2006, Vol. 89 Issue 17, p171115 

    Negatively and positively refractive behaviors are achieved in a two-dimensional photonic crystal of pillar type for TE and TM polarizations, respectively, at the same frequency. The photonic crystal is formed by a triangular lattice of silicon pillars of finite height on a silicon substrate. A...

  • Ultrasmall radial polarizer array based on patterned plasmonic nanoslits. Iwami, Kentaro; Ishii, Miho; Kuramochi, Yuzuru; Ida, Kenichi; Umeda, Norihiro // Applied Physics Letters;10/15/2012, Vol. 101 Issue 16, p161119 

    We developed an ultrasmall radial or azimuthal polarization converter of size ranged from 10 to 100 μm. The converter consists of a half-wave plate divided into four quadrants, each of which is made of periodic gold nanoslits at different orientations in steps of 45°. The converter and its...

  • Direct noninterference cylindrical vector beam generation applied in the femtosecond regime. Moh, K. J.; Yuan, X.-C.; Bu, J.; Low, D. K. Y.; Burge, R. E. // Applied Physics Letters;12/18/2006, Vol. 89 Issue 25, p251114 

    This letter describes the generation of femtosecond cylindrical vector beams by passing the optical pulse through a microfabricated spiral phase plate and an azimuth-type polarization analyzer. The resulting beam resembles a doughnut and has a polarization that is axially symmetric. Portions of...

  • Experimental and theoretical study of the weak and asymmetrical thermal lens effect of Nd:YLF crystal for σ and Ï€ polarizations. Zhang, Zilong; Liu, Qiang; Nie, Mingming; Ji, Encai; Gong, Mali // Applied Physics B: Lasers & Optics;Sep2015, Vol. 120 Issue 4, p689 

    The thermal lens effect of Nd:YLF crystal for different polarized beams is experimentally and theoretically studied in this paper. In the experiment, the different thermal lens effects of Nd:YLF crystal along a and c axes for π- and σ-polarized probe beams are observed, and the values of...


Read the Article


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

Try another library?
Sign out of this library

Other Topics