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2011 International Quantum Electronics Conference (IQEC) and Conference on Lasers and Electro-Optics (CLEO) Pacific Rim incorporating the Australasian Conference on Optics, Lasers and Spectroscopy and the Australian Conference on Optical Fibre Technology
A gauge block evaluation system was developed and its uncertainty estimation was performed for distance determination using the repetition interval of a femtosecond optical frequency comb — the national standard tool for measuring length in Japan.
A semiconductor laser was injection locked to a single optical frequency comb mode with a dither-free phase locked loop. The standard deviation was 0.014Hz over 24 hours with an Allan deviation of 1 × 10−17 at 10s averaging.
We present a metamaterial design based on the tight-binding properties of coupled optical-cavity arrays and quantum-mechanical atom-cavity arrays. By tailoring their dispersion properties, waveguiding of photonic and polaritonic Bloch waves can be engineered.
We investigate theoretically the modification of atomic spontaneous emission in a two-way cascaded cavity QED system consisting of microtoroidal resonators connected via an optical fiber. Under appropriate conditions, atoms coupled to different resonators can undergo either superradiant decay or coherent dipole-dipole interaction.
We revisit the “trapping states” of the micromaser from a quantum trajectory point of view, treating many simultaneously interacting atoms and a random atomic beam. Previous studies of trapping states are severely restricted by simplifying assumptions. We show that sub-Poissonian maser fields are generated still after the principal restrictions are lifted.
I will start by describing the basic motivation for using strongly interacting systems of photons to simulate condensed matter phenomena. I will proceed by briefly reviewing our founding results on the simulations of Mott to superfluid phase transitions in coupled cavities [1,2] doped with two level systems. I will also epigrammatically mention the main ideas behind the photonic simulation of quantum...
Recent experiments have realized a familiar model of quantum optics, dispersive optical bistability, in the context of microwave coplanar resonators with internal Josephson junctions that are used to achieve large effective Kerr nonlinearities with very low dissipation. A Josephson junction qubit constitutes an effective atom that may be coupled to such a nonlinear resonator to provide a very useful...
Femtosecond Electron Diffraction has enabled atomic resolution to structural changes as they occur, essentially watching atoms move in real time — directly observe the very essence of chemistry and biology. This experiment has been referred to as "making the molecular movie". Recent results will be presented from the latest advance in electron sources and characterization to direct observation...
We measured full-scanning nonlinear Fourier-transform spectroscopy of D2 molecules using high-order harmonic radiation. We compared the spectral shape obtained from the nonlinear Fourier-transform spectroscopy to that measured directly with a spectrometer.
We show, that the electron-phonon relaxation rate in fs-laser excited metal is a strong function of the time-dependent lattice temperature. The lattice heating and restructuring occurs on a much shorter time scale than previously expected.
Synthetic diamond's extreme properties are attractive for enabling large increases in laser capability. This paper reviews progress in diamond Raman lasers for reducing device size, extending power and increasing wavelength reach.
We present a 1064 nm pumped diamond Raman laser operating with 71% quantum conversion efficiency to the 2nd Stokes wavelength of 1485 nm. Up to 1.6 W average power is produced with excellent beam quality.
We study the temporal amplitude stability of a continuous-wave (CW) intracavity frequency-doubled self-Raman Nd:GdVO4 laser (yellow laser), and compare to a CW intracavity frequency-doubled Nd:GdVO4 laser (green laser). Both experimental and theoretical results indicate that at high pump powers the yellow laser shows strong amplitude fluctuations (peak to peak >20%) similar to that in the simple...
1.5 W of 1st Stokes, 1167 nm, cw output power was produced using a Nd:YLF laser crystal associated to a BaWO4 Raman crystal. The laser built provided a M2 of 1.51 and 1.43, vertical and horizontal, respectively. This high beam quality and Watt level power laser was built in a long cavity, demonstrating the advantages of Nd:YLF, which will ultimately enable low amplitude noise Raman lasers and allowing...
We report a tunable optical parametric oscillator using a 2D PPLN as simultaneously an electro-optic Bragg Q-switch and an optical frequency mixer in a Nd:YVO4 laser. >2-kW peak-power eye-safe light was obtained with this system.
A diode-pumped high-repetition-rate, high peak power 456nm blue laser is present. The highest peak power of 2.3 kW blue laser is obtained at a pulse repetition of 10 kHz.
With low Nd doped Nd:GdVO4 and LBO intracavity frequency doubled, a high power and efficient continuous wave 456 nm blue laser is developed, as the pump power of 35 W, 7.6 W output power is achieved.
We report on an all-digital radio-frequency phasemeter for application in precision length measurements using heterodyne laser interferometry [1]. Our phasemeter has a phase sensitivity of 200 nrad/√Hz at signal frequencies of 0.2 Hz and above. We demonstrate the use of our phasemeter in an optical heterodyne interferometric configuration, using an active Sagnac interferometer test-bed. In our low-noise...
We present a novel technique for optical interrogation of multiplexed displacement sensors with homodyne detection. Based upon the Digitally Enhanced Interferometry, we propose the use of a complex (IQ) modulation to reduce sensitivity to scattered light and provide multiplexing capabilities. Results of initial prototype testing are presented.
A new generation of gravitational wave detectors based on precision laser interferometry over long baselines should yield the first detections of these predicted waves in the next five years. The required sensitivity equivalent to displacements of ∼10−19 m over multikilometer baselines puts these detectors among the most precise optical instruments ever. To move the field from simply detecting gravitational...
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