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Showing 1 to 12 of 120 entries
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Ultralow noise miniature external cavity semiconductor laser.

Nature communications

Liang W, Ilchenko VS, Eliyahu D, Savchenkov AA, Matsko AB, Seidel D, Maleki L.
PMID: 26104321
Nat Commun. 2015 Jun 24;6:7371. doi: 10.1038/ncomms8371.

Advanced applications in optical metrology demand improved lasers with high spectral purity, in form factors that are small and insensitive to environmental perturbations. While laboratory-scale lasers with extraordinarily high stability and low noise have been reported, all-integrated chip-scale devices...

Extended ultrahigh-Q-cavity diode laser.

Optics letters

Xie Z, Liang W, Savchenkov AA, Lim J, Burkhart J, McDonald M, Zelevinsky T, Ilchenko VS, Matsko AB, Maleki L, Wong CW.
PMID: 26030566
Opt Lett. 2015 Jun 01;40(11):2596-9. doi: 10.1364/OL.40.002596.

We report on a study of a 698 nm extended cavity semiconductor laser with intracavity narrowband optical feedback from a whispering gallery mode resonator. This laser comprises an ultrahigh-Q (>10(10)) resonator supporting stimulated Rayleigh scattering, a diffraction grating wavelength...

Optical Cherenkov radiation in overmoded microresonators.

Optics letters

Matsko AB, Liang W, Savchenkov AA, Eliyahu D, Maleki L.
PMID: 27367062
Opt Lett. 2016 Jul 01;41(13):2907-10. doi: 10.1364/OL.41.002907.

We show that an optical analog of Cherenkov radiation (dispersive wave) is observable in a nonlinear microring resonator generating Kerr frequency comb and containing linearly interacting families of equidistant modes. The radiation results from disruptions in the frequency dependent...

Threshold and linewidth of a mirrorless parametric oscillator.

Physical review letters

Fleischhauer M, Lukin MD, Matsko AB, Scully MO.
PMID: 11019145
Phys Rev Lett. 2000 Apr 17;84(16):3558-61. doi: 10.1103/PhysRevLett.84.3558.

We analyze the above-threshold behavior of a mirrorless parametric oscillator based on resonantly enhanced four-wave mixing in a dense atomic vapor. It is shown that, in the ideal limit, an arbitrary small flux of pump photons is sufficient to...

Anomalous stimulated Brillouin scattering via ultraslow light.

Physical review letters

Matsko AB, Rostovtsev YV, Fleischhauer M, Scully MO.
PMID: 11289841
Phys Rev Lett. 2001 Mar 05;86(10):2006-9. doi: 10.1103/PhysRevLett.86.2006.

We study stimulated Brillouin scattering (SBS) in an ultradispersive coherent medium, and show that the properties of SBS change drastically when the group velocity of light in the material approaches or becomes less than the speed of sound. In...

Phosphatidylcholine synthesis: differing patterns in soybean and carrot.

Plant physiology

Datko AH, Mudd SH.
PMID: 16666397
Plant Physiol. 1988 Nov;88(3):854-61. doi: 10.1104/pp.88.3.854.

The methylation steps in the biosynthesis of phosphatidylcholine by tissue culture preparations of carrot (Daucus carota L.) and soybean (Glycine max), and by soybean leaf discs, have been studied. Preparations were incubated with tracer concentrations of l-[(3)H(3)C]methionine and the...

Synthesis of Ethanolamine and Its Regulation in Lemna paucicostata.

Plant physiology

Mudd SH, Datko AH.
PMID: 16667073
Plant Physiol. 1989 Oct;91(2):587-97. doi: 10.1104/pp.91.2.587.

The metabolism of ethanolamine and its derivatives in Lemna paucicostata has been investigated, with emphasis on the path-way for synthesis of phosphoethanolamine, a precursor of phosphatidylcholine in higher plants. In experiments involving labeling of intact plants with radioactive serine,...

In vivo regulation of de novo methionine biosynthesis in a higher plant (lemna).

Plant physiology

Giovanelli J, Mudd SH, Datko AH.
PMID: 16664073
Plant Physiol. 1985 Feb;77(2):450-5. doi: 10.1104/pp.77.2.450.

Administration of methionine to growing Lemna had essentially no effect on accumulation of sulfate sulfur in protein cysteine, but decreased accumulation into cystathionine and its products (homocysteine, methionine, S-methylmethioninesulfonium salt, S-adenosylmethionine, and S-adenosylhomocysteine) to as low as 21% that...

Enzymes of phosphatidylcholine synthesis in lemna, soybean, and carrot.

Plant physiology

Datko AH, Mudd SH.
PMID: 16666464
Plant Physiol. 1988 Dec;88(4):1338-48. doi: 10.1104/pp.88.4.1338.

Cell-free extracts from Lemna and suspension cultured carrot (Daucus Carota L.) catalyze S-adenosylmethionine-dependent N-methylations of phosphoethanolamine, phosphomethylethanolamine, and phosphodimethylethanolamine; extracts of suspension cultured soybean (Glycine max), of phosphoethanolamine only. Material pelleted from each tissue between 15,000 and 100,000g catalyzes...

Enantioselective, potentiometric membrane electrodes based on cyclodextrins: application for the determination of R-baclofen in its pharmaceutical formulation.

Talanta

Stefan van Staden RI, Rat'ko AA.
PMID: 18970679
Talanta. 2006 Jul 15;69(5):1049-53. doi: 10.1016/j.talanta.2005.12.022. Epub 2006 Jan 19.

Two enantioselective, potentiometric membrane electrodes based on alpha- and gamma-cyclodextrins were proposed for the assay of R-baclofen. The slopes of the electrodes were 59.50 and 51.00 mV/pR-baclofen for alpha- and gamma-cyclodextrin-based electrodes, respectively. The detection limits of the proposed...

Whispering gallery resonators for studying orbital angular momentum of a photon.

Physical review letters

Matsko AB, Savchenkov AA, Strekalov D, Maleki L.
PMID: 16241656
Phys Rev Lett. 2005 Sep 30;95(14):143904. doi: 10.1103/PhysRevLett.95.143904. Epub 2005 Sep 29.

We propose a simple method for generation and detection of photons with nonzero angular momentum. The method utilizes high-quality factor ring resonators that transform a plane electromagnetic wave into a wave with nonzero angular momentum, and vice versa. We...

Brillouin lasing with a CaF2 whispering gallery mode resonator.

Physical review letters

Grudinin IS, Matsko AB, Maleki L.
PMID: 19257418
Phys Rev Lett. 2009 Jan 30;102(4):043902. doi: 10.1103/PhysRevLett.102.043902. Epub 2009 Jan 28.

Stimulated Brillouin scattering with both pump and Stokes beams in resonance with whispering gallery modes of an ultrahigh Q calcium fluoride resonator is demonstrated for the first time. The resonator is pumped with 1064 nm light and has 3...

Showing 1 to 12 of 120 entries