Nano Wiggler for Wide-range Tunable Laser Applications

2012 ◽  
Author(s):  
Jed Khoury ◽  
Shivashankar Vangala ◽  
Andrew Davis ◽  
John Kiersted ◽  
Dennis Walker
Keyword(s):  
Tunable Laser ◽  
Laser Applications ◽  
Wide Range

Gallium Arsenide Photonic Integrated Circuit Platform for Tunable Laser Applications

2021 ◽  
pp. 1-1
Author(s):  
Paul Verrinder ◽  
Lei Wang ◽  
Joseph Fridlander ◽  
Fengqiao Sang ◽  
Victoria Rosborough ◽  
...  
Keyword(s):  
Gallium Arsenide ◽  
Integrated Circuit ◽  
Tunable Laser ◽  
Laser Applications ◽  
Photonic Integrated Circuit

A virtual pivot point MEMS rotary comb actuator for tunable laser applications

2012 ◽  
Author(s):  
T. M. F. Amin ◽  
M. Q. Huda ◽  
Y. Ning ◽  
G. McKinnon ◽  
J. Tulip ◽  
...  
Keyword(s):  
Tunable Laser ◽  
Laser Applications ◽  
Pivot Point

Optical properties of β-Ga2O3:Cr3+ single crystals for tunable laser applications

1987 ◽  
Vol 39 (1) ◽  
pp. 29-33 ◽  
Author(s):  
D. Vivien ◽  
B. Viana ◽  
A. Revcolevschi ◽  
J.D. Barrie ◽  
B. Dunn ◽  
...  
Keyword(s):  
Optical Properties ◽  
Single Crystals ◽  
Tunable Laser ◽  
Laser Applications

scholarly journals Crystal field engineering of transition metal doped II-VI ternary and quaternary semiconductors for mid-IR tunable laser applications

2015 ◽  
Vol 5 (9) ◽  
pp. 2036 ◽  
Author(s):  
A.D. Martinez ◽  
D.V. Martyshkin ◽  
R.P. Camata ◽  
V.V. Fedorov ◽  
S.B. Mirov
Keyword(s):  
Transition Metal ◽  
Crystal Field ◽  
Tunable Laser ◽  
Laser Applications ◽  
Metal Doped

The high-resolution absorption spectroscopy branch on the VUV beamline DESIRS at SOLEIL

2016 ◽  
Vol 23 (4) ◽  
pp. 887-900 ◽  
Author(s):  
Nelson de Oliveira ◽  
Denis Joyeux ◽  
Mourad Roudjane ◽  
Jean-François Gil ◽  
Bertrand Pilette ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Spectral Resolution ◽  
Tunable Laser ◽  
High Spectral Resolution ◽  
Spectral Window ◽  
Wide Range ◽  
Sample Chamber ◽  
Moderate Resolution ◽  
Gaseous Sample ◽  
Selection Of

A VUV absorption spectroscopy facility designed for ultra-high spectral resolution is in operation as a dedicated branch on the DESIRS beamline at Synchrotron SOLEIL. This branch includes a unique VUV Fourier transform spectrometer (FTS) and a dedicated versatile gas sample chamber. The FTS instrument can cover a large UV–VUV spectral range from 4 to 30 eV, with an ultimate line width of 0.08 cm−1on a large spectral window, ΔE/E= 7%, over which all spectral features can be acquired in a multiplex way. The performance can be considered to be a middle ground between broadband moderate-resolution spectrometers based on gratings and ultra-high-spectral-resolution VUV tunable-laser-based techniques over very narrow spectral windows. The various available gaseous-sample-handling setups, which function over a wide range of pressures and temperatures, and the acquisition methodology are described. A selection of experimental results illustrates the performance and limitations of the FTS-based facility.

scholarly journals Investigation of parameters governing damage resistance of nematic liquid crystals for high-power or peak-intensity laser applications

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
T. Z. Kosc ◽  
A. A. Kozlov ◽  
S. Papernov ◽  
K. R. P. Kafka ◽  
K. L. Marshall ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Excited States ◽  
Qualitative Description ◽  
Energy Separation ◽  
Pulse Excitation ◽  
Laser Applications ◽  
Damage Resistance ◽  
Wide Range ◽  
Laser Induced Breakdown ◽  
Laser Induced Damage

Abstract We investigate the damage resistance of saturated and unsaturated liquid crystals (LC’s) under a wide range of laser excitation conditions, including 1053-nm pulse durations between 600 fs and 1.5 ns and nanosecond pulse excitation at 351 nm and 532 nm. This study explores the relationship between the LC’s resistance to laser-induced breakdown (damage) and the electronic structure (π-electron delocalization) of the constituent molecules. The laser-induced damage threshold at all wavelengths and pulse durations was consistently higher in saturated materials than in their unsaturated counterparts. The wavelength’s dependence in the results suggests that the energy coupling process that leads to laser-induced breakdown is governed by the energy separation between the ground state and the first and second excited states, while the pulse duration’s dependence in the results reveals the important role of electron relaxation between the excited states. A qualitative description was developed to interpret the experimental observations.

Spatially Resolved Site Selective Optical Spectroscopy on Nd Doped GaN Epitaxial Layers

2008 ◽  
Vol 1111 ◽  
Author(s):  
Nate Woodward ◽  
Naveen Jha ◽  
Eric Readinger ◽  
Grace Metcalfe ◽  
Michael Wraback ◽  
...  
Keyword(s):  
Energy Levels ◽  
Ion Concentration ◽  
Phonon Coupling ◽  
Laser Applications ◽  
Spatially Resolved ◽  
Electron Phonon Coupling ◽  
Wide Range ◽  
Localized Mode ◽  
Site Selective

AbstractDue to its favorable electronic and thermal properties GaN has been considered as a rare-earth host material for solid state amplifier and laser applications. To this end, we performed spatially resolved combined excitation emission spectroscopy (CEES) on Nd ions which were in-situ-doped into GaN epitaxial films grown by plasma assisted molecular beam epitaxy (PA-MBE) on c-plane sapphire substrate. For a wide range of concentration (up to 8at%) we find in the emission a dominant incorporation site, which can be identified with good certainty as a substitutional ‘Ga’ site. Energy levels and electron-phonon coupling to a localized mode can be identified. For the majority site, confocal spectral imaging under selective excitation show changes in emission intensity, excitation and emission wavelength on a submicron length scale suggesting spatial inhomogeneities in terms of Nd3+ ion concentration.

Crystal Growth and Optical Properties of AgGaS2 and AgGaSe2

MRS Bulletin ◽  
1998 ◽  
Vol 23 (7) ◽  
pp. 28-36 ◽  
Author(s):  
Gary C. Catella ◽  
David Burlage
Keyword(s):  
Optical Properties ◽  
Near Infrared ◽  
Tunable Laser ◽  
Production Quality ◽  
Gallium Sulfide ◽  
Harmonic Generator ◽  
Wide Range ◽  
Bulk Absorption ◽  
Diode Pumped ◽  
Pump Lasers

Silver gallium sulfide (AgGaS2), silver gallium selenide (AgGaSe2), and silver gallium indium selenide (AgGaxIn(1 − x)Se2) are unique nonlinear crystals suitable for a wide range of three-wave mixing applications. They combine strong nonlinear coupling with phase matching across a wide (0.5 − 12.5 μm) transmission range. These properties provide the basis for CO2 laser harmonic-generator (HG), visible (VIS), and near-infrared (NIR) pumped opticalparametric-oscillator (OPO) and sumand difference-frequency-generator (SFG/DFG) systems for producing tunable laser radiation from approximately 0.65 to 12 μm. A wide range of pump lasers is now available, including diode lasers capable of direct pumping of AgGaS2 and efficient diode-pumped lasers for pumping any of these crystals. Significant progress in material characteristics and nonlinear optical (NLO) performance has been accomplished. Bulk absorption for production-quality AgGaS2 is ~0.01 − 0.02 cm across the 0.8−9-μm region. Exceptional crystals of AgGaS2 have absorption <0.0005 cm−1 at 1.064 μm, and even at 0.633 μm, absorption is ~0.015 cm−1. Figure 1 illustrates the late 1980s vintage and present transmission of AgGaS2. For AgGaSe2, absorption for production material ranges from 0.010 cm to 0.018 cm−1 from 1 μm to 11 μm. Certain crystals can have 0.007−0.008 cm−1 absorption at 10.6 μm. The NIR transmission curves for AgGaSe2 and AgGaxIn(1 − x)Se2 appear in Figure 2. This combination of optical properties, along with their good physical characteristics, make these two crystals versatile for NLO applications spanning the VIS to the infrared (ir).

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