Hybrid phase conjugator/modulators using self-pumped 0°-cut and 45°-cut BaTiO3 crystals

Pepper, David M.
October 1986
Applied Physics Letters;10/20/1986, Vol. 49 Issue 16, p1001
Academic Journal
We report on the demonstration of a simple, passive, alignment-free retromodulator/conjugator. By applying a time-varying electric field across a self-pumped phase conjugate mirror, simultaneous wave front reversal and temporal modulation encoding occur within the same volume. With modest signal fields (∼400 V/cm), we observe >90% depth-of-phase modulation, with a measured bandwidth in excess of 1 MHz (scalable to >10 GHz), and with excellent conjugation fidelity. We also demonstrate, for the first time, self-pumped conjugation using a 45°-cut crystal of BaTiO3 with improved performance: 62% conjugate reflectivity, 100% depth-of-phase modulation at ∼120 V/cm, and faster conjugate-wave build-up time (by a factor of ∼3). Applications of these devices to high modulation-index and high optical-power-handling modulators, remote fiber sensors, and mode-locked phase conjugate resonators are discussed.


Related Articles

  • Magneto-optic spatial light modulators driven by an electric field. Park, Jae-Hyuk; Takagi, H.; Nishimura, K.; Uchida, H.; Inoue, M.; Park, Jae-Hak; Cho, Jae-Kyeong // Journal of Applied Physics;5/15/2003, Vol. 93 Issue 10, p8525 

    A magneto-optic spatial light modulator driven by an electric field is fabricated by using the electrostrictive effect of [Pb(Zr[SUB0.52]Ti[SUB0.48])O[SUB3]] (PZT) thin film. As the stress field induced by the PZT thin film reduces the anisotropy energy of the structured garnet film, we find...

  • Planar gallium nitride ultraviolet optical modulator. Oberhofer, A.E.; Muth, J.F.; Johnson, M.A.L.; Chen, Z.Y.; Fleet, E.F.; Cooper, G.D. // Applied Physics Letters;10/6/2003, Vol. 83 Issue 14, p2748 

    A planar optical modulator operating near 360 nm suitable for ultraviolet spatial light modulation has been constructed. The modulator operates in transmission mode with a 18% change in transmission at 305 V. The modulator is based on using the electric field to shift and broaden the...

  • Massively parallel manipulation of single cells and microparticles using optical images. Pei Yu Chiou; Ohta, Aaron T.; Wu, Ming C. // Nature;7/21/2005, Vol. 436 Issue 7049, p370 

    The ability to manipulate biological cells and micrometre-scale particles plays an important role in many biological and colloidal science applications. However, conventional manipulation techniques—including optical tweezers, electrokinetic forces (electrophoresis, dielectrophoresis,...

  • Fast-response and scattering-free polymer network liquid crystals for infrared light modulators. Yun-Hsing Fan, S.; Yi-Hsin Lin, S.; Hongwen Ren, S.; Gauza, Sebastian; Shin-Tson Wu // Applied Physics Letters;2/23/2004, Vol. 84 Issue 8, p1233 

    A fast-response and scattering-free homogeneously aligned polymer network liquid crystal (PNLC) light modulator is demonstrated at λ=1.55 μm wavelength. Light scattering in the near-infrared region is suppressed by optimizing the polymer concentration such that the network domain sizes are...

  • Planar ZnO ultraviolet modulator. Zhang, X. Y.; Dhawan, A.; Wellenius, P.; Suresh, A.; Muth, J. F. // Applied Physics Letters;8/13/2007, Vol. 91 Issue 7, p071107 

    A planar electroabsorption modulator suitable for spatial light modulation has been constructed. The device operates near the band edge of zinc oxide at 3.3 eV and is based on broadening and shifting of the unconfined exciton with an externally applied electric field. The ZnO active layer was...

  • Modulators Using DPS-DNG-Layered Structure. Shahbazian, J. H. // ISRN Optics;2012, p1 

    The influence of an applied electric field on a periodic structure composed of alternating layers of isotropic DPS (double positive index of refraction) and anisotropic DNG (double negative index of refraction) has been studied and shown that in the presence of an external electric field, one...

  • Micromechanical modulator manipulates gratings. Bains, Sunny // Laser Focus World;Apr97, Vol. 33 Issue 4, p26 

    Focuses on the light modulators developed based on micromechanics research at Stanford University in Palo Alto, California. Details of the process used to create the modulator; Features of grating light valves; Importance of frame rate for a binary device; Contrast ratio of grating light valves.

  • Modulators encode data on a beam. Lerner, Eric J. // Laser Focus World;Apr97, Vol. 33 Issue 4, p127 

    Focuses on issues affecting the development of light modulators. Principles of carrier modulation; Physical processes of modulation; Modulating materials; Materials which provide the key to high-speed light modulation.

  • Transport modeling of multiple-quantum-well optically addressed spatial light modulators. Smith, S.L.; Hesselink, L. // Journal of Applied Physics;3/1/1997, Vol. 81 Issue 5, p2076 

    Investigates the transport modeling of multiple-quantum-well optically addressed spatial light modulators. Consideration of nonlinear transport effects; Basic screening behavior of light modulars; Simulation of grating formation and decay.


Read the Article


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

Try another library?
Sign out of this library

Other Topics