Results 231 to 240 of about 2,049 (291)

One-Step Fabrication of 0D Cs₄PbBr₆ Perovskite with Nonlinear Optical Properties for Ultrafast Pulse Generation. [PDF]

Adv Sci (Weinh)
Jiang N, Chu H, Pan Z, Pan H, Zhao S, Li D.   +5 more
europepmc   +1 more source

Strong broadband intensity noise squeezing from infrared to terahertz frequencies in lasers with nonlinear dissipation. [PDF]

Nanophotonics
Pontula S, Sloan J, Rivera N, Soljačić M.   +3 more
europepmc   +1 more source

Investigation of 2H/1T/1T' phase MoS₂ optical nonlinearity. [PDF]

Discov Nano
Wang HS, Su SP, Huang YH, Tu LW, Wadekar PV, Wang HC, Lee CK.   +6 more
europepmc   +1 more source

Modeling absorption in saturable absorbers

Optics Communications, 2001
Abstract Non-linear absorption in boric acid glass films with 10−4 M concentration of fluorescein and rhodamine 6G was measured with beam intensity variation covering six orders of magnitude. The non-linear absorption in these systems has been interpreted in terms of the four-level model of saturable absorbers.
Alok Sharan, Ramesh C Sharma, Arvind Ayyer   +2 more
exaly   +3 more sources

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An Analysis of Saturable Absorbers

Applied Optics, 1967
This paper contains an analysis of the behavior of saturable filters, based on models with simple energy level structures. In this analysis, the effects of possible excited state absorption at the irradiating wavelength are considered and are shown to give rise to a nonsaturable component of the absorption coefficient.
M Hercher
exaly   +3 more sources

Low-dimensional nanomaterial saturable absorbers for ultrashort-pulsed waveguide lasers

Optical Materials Express, 2018
A wide range of saturable absorbers composed of novel low-dimensional nanomaterials were fabricated, and their linear and nonlinear optical properties were characterized.
Xiantao Jiang, Simon Gross, Michael J Withford   +2 more
exaly   +2 more sources

Metamaterial saturable absorber mirror

Optics Letters, 2013
We propose a metamaterial saturable absorber mirror at midinfrared wavelengths that can show a saturation of absorption with intensity of incident light and switch to a reflecting state. The design consists of an array of circular metallic disks separated by a thin film of vanadium dioxide (VO(2)) from a continuous metallic film. The heating due to the
Govind, Dayal, S Anantha, Ramakrishna
openaire   +2 more sources

Integrated ultrafast saturable absorber

Optics Letters, 1994
An ultrafast saturable absorber was demonstrated experimentally in AlGaAs, operated with a photon energy below half the band gap, near 1555 nm. Both the saturation intensity and the linear transmission can be independently designed in the structure. The device is based on spatial soliton emission from a tapered channel waveguide with a corresponding ...
A, Villeneuve, J S, Aitchison, J U, Kang, P G, Wigley, G I, Stegeman   +4 more
openaire   +3 more sources

A saturable absorber for the iodine laser

Optics Communications, 1976
Abstract An absorber for iodine laser pulses has been developed using iodine atoms in the ground state as the absorbing species. The iodine atoms have been produced by dissociation of gaseous molecular iodine in a heated cell. The absorption is easily saturated at moderate energy densities.
Fill, E., Hohla, K.
openaire   +2 more sources