Results 201 to 210 of about 1,473 (264)
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A saturable absorber for the iodine laser
Optics Communications, 1976Abstract 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.
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The generalized saturable absorber
IEEE Photonic Society 24th Annual Meeting, 2011We extend the concept of the saturable absorber made of two linear polarizers and a fiber section to a structure with multiple polarizers and fibers. The structure is studied with simple analytical relations and full numerical simulations. We stablish design procedures for fiber lasers.
Rafael Gomez Alcala, Antonio Dengra
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Lifetimes of Saturable Absorbers
Nature, 1966THE use of saturable absorbers such as aluminium phthalocyanine for the passive Q-switching of ruby lasers1 raises the question of the lifetime of the active molecule. We have measured the lifetime of that state of aluminium phthalocyanine which corresponds to absorption at or near 6943 A.
P. W. A. BOWE +2 more
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An Analysis of Saturable Absorbers
Applied Optics, 1967This 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.
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Scaling of the antiresonant Fabry–Perot saturable absorber design toward a thin saturable absorber
Optics Letters, 1995We demonstrate and discuss the scaling of the antiresonant Fabry-Perot saturable absorber toward a novel antiref lection-coated thin saturable absorber. With a Ti:sapphire laser we obtained self-starting Kerr-lens mode-locked pulses as short as 19 fs. With the higher modulation depth of the thin saturable absorber we obtained soliton mode-locked self ...
I D, Jung +4 more
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Rubrene, a saturable absorber for 308 nm
Optics Communications, 1988Abstract The use of the 1 A- 1 B b transition in catacondensed polycyclic aromatic hydrocarbons for the saturable absorption by excimer laser pulses is suggested. The saturation characteristics of rubrene (in benzene solution) for sub-ps XeCl ∗ laser pulses are reported. Numerical calculations which include excited state absorption are presented.
Kaschke, M., Ernsting, N., Schäfer, F.
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Broadband fast semiconductor saturable absorber
Optics Letters, 1992Kerr lens mode-locked (KLM) solid-state lasers are typically not self-starting. We address this problem by introducing a broadband semiconductor saturable absorber that could be used as a tunable, all-solid-state, passive starting mechanism. We extend the wavelength tunability of a semiconductor saturable absorber to more than 100 nm using a band-gap ...
G R, Jacobovitz-Veselka +2 more
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Study of Saturable Absorber Switching Efficiencies
Journal of Applied Physics, 1969Theoretical and experimental studies of absorber switching efficiencies are described for a ruby laser operating at 77°K. The various operating regimes of absorber-switched lasers are reviewed and the importance of inclusion in the theory of nonsaturable losses associated with the laser and absorber media is demonstrated.
Szabo, A., Erickson, L. E.
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Single-mode-fiber saturable absorber
Optics Letters, 1984Saturable absorption is performed on a signal in a single-mode fiber by allowing the evanescent field of the guided wave to interact with a saturable-absorbing dye. The evanescent field is exposed by mechanically removing a portion of the fiber cladding. The saturable material is then placed in close proximity to the fiber core.
W V, Sorin +3 more
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Excitability in a semiconductor laser with saturable absorber
Optics Letters, 2011We show that a monolithic and compact vertical cavity laser with intracavity saturable absorber can emit short excitable pulses. These calibrated optical pulses can be excited as a response to an input perturbation whose amplitude is above a certain threshold.
Sylvain, Barbay +2 more
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