Holographic Laser Oscillator Which Adaptively Corrects for Polarization and Phase Distortions

Green, R. P. M; Udaiyan, D.; Crofts, G.J.; Kim, D. H.; Damzen, M. J.

doi:10.1103/physrevlett.77.3533

Cited by 16 publications

(5 citation statements)

References 20 publications

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“…A reimplementation of a one-dimensional numerical model served as a reference to compare the results to numerical results obtained in other groups. Features demonstrated before by experiments [1,2] and onedimensional models were confirmed qualitatively by the two-dimensional model. The quantitative differences to one-dimensional models is substantial though.…”

Section: Discussionsupporting

confidence: 74%

“…Because easily accessible by experiment, this treatment concentrates on three transverse beam features -the 1/e beam radius w 0 at the focus, the crossing angle θ between pump and probe and the Reflection 2D Transmission 2D Reflection 1D Transmission 1D The efficiency of SPPC laser resonators [2,3] employing gain gratings critically depends on the reflectivity of the gain grating with the phase conjugate reflectivity defined as the ratio of the fluences of the beams A 4 and A 3 at the left face (z=0) of the gain medium.…”

Section: Sensitivity To Spatial Featuresmentioning

confidence: 99%

“…Hereby, the optical interference pattern of two or more coherent beams, intersecting inside a laser amplifier is transferred into the spatial distribution of the gain coefficient by means of spatial hole burning. Exploiting this effect in a degenerate four-wave mixing (DFWM) geometry, self-pumped phase conjugate (SPPC) ring resonators with excellent beam quality and effective correction of intracavity phase distortions have been experimentally demonstrated [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Two-dimensional modeling of transient gain gratings in saturable gain media

Elsner¹,

Ullmann²,

Heuer³

et al. 2012

Opt. Express

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A transient two-dimensional model describing degenerate four-wave mixing inside saturable gain media is presented. The new model is compared to existing one-dimensional models with their qualitative results confirmed. Large quantitative differences with respect to peak reflectivity and optimum pump fluence are observed. Furthermore, the influence of the beam focus size, the transverse position and the crossing angle on the reflectivity of the grating is investigated using the improved model. It is demonstrated that the phase conjugate reflectivity depends sensitively on the transverse features of the interacting beams with a transverse shift in the position of the pump beams yielding a threefold improvement in reflectivity.

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Section: Discussionsupporting

confidence: 74%

Section: Sensitivity To Spatial Featuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Two-dimensional modeling of transient gain gratings in saturable gain media

Elsner¹,

Ullmann²,

Heuer³

et al. 2012

Opt. Express

View full text Add to dashboard Cite

show abstract

“…Various techniques have been explored to produce a phase-conjugate beam, including degenerate four-wave mixing, ,− backward stimulated Brillouin, Raman, and Rayleigh-wing or Kerr scattering, and single- or multiphoton-pumped backward stimulated emission (lasing) . Though most experiments have focused on spatial properties of the field, some have concerned phase conjugation of isotropic polarization states .…”

Section: Phase Conjugationmentioning

confidence: 99%

Real-Time Phase Conjugation of Vector Vortex Beams

et al. 2019

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Vector vortex beams have played a fundamental role in the better understanding of coherence and polarization. They are described by spatially inhomogeneous polarization states, which present a rich optical mode structure that has attracted much attention for applications in optical communications, imaging, spectroscopy and metrology. However, this complex mode structure can be quite detrimental when propagation effects such as turbulence and birefringence perturb the beam. Optical phase conjugation has been proposed as a method to recover an optical beam from perturbations. Here we demonstrate full phase conjugation of vector vortex beams using three-wave mixing. Our scheme exploits a fast non-linear process that can be conveniently controlled via the pump beam. Our results pave the way for sophisticated, practical applications of vector beams.PACS numbers:

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“…Holographic lasers, four-wave mixing, and phase conjugation in laser crystals and holographic oscillators have been demonstrated in YAG, vanadate, and Ti:sapphire crystals that use gain gratings as holographic elements. [17][18][19][20][21][22] Semiconductors can also have optical gain when they are optically or electrically pumped. Typical laser gain in GaAs is near g ϭ 300 cm Ϫ1 .…”

Section: Introductionmentioning

confidence: 99%

Dynamic holography in a broad-area optically pumped vertical GaAs microcavity

et al. 2001

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A broad-surface-area vertical GaAs microcavity was operated as an adaptive holographic film. The cavity mirrors were transparent to high-energy (millijoules per square centimeter) hologram writing pulses at a wavelength of 730 nm that generated optically pumped gain gratings in a 1-m-thick active layer of GaAs. The gain gratings were probed with a low-intensity (mW) tunable laser at wavelengths near the GaAs band edge in the high-reflectance bandwidth of the cavity Bragg mirrors. When the structure was designed with low mirror reflectances ͓(R 1 R 2) 1/2 ϭ 90%͔ to operate below the lasing threshold, the cavity resonance bandwidth was sufficiently broad to permit homogeneous hologram readout over a large (several square millimeters) area. Diffraction efficiencies of approximately 10% were predicted and approached experimentally. These results represent a first step toward the realization of a holographic vertical-cavity surface-emitting laser structure.

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Holographic Laser Oscillator Which Adaptively Corrects for Polarization and Phase Distortions

Cited by 16 publications

References 20 publications

Two-dimensional modeling of transient gain gratings in saturable gain media

Two-dimensional modeling of transient gain gratings in saturable gain media

Real-Time Phase Conjugation of Vector Vortex Beams

Dynamic holography in a broad-area optically pumped vertical GaAs microcavity

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