Generation of 11-fs pulses from a self-mode-locked Ti:sapphire laser

Asaki, Melanie T.; Huang, Chung-Po; Garvey, Dennis M.; Zhou, Jianping; Kapteyn, Henry C.; Murnane, Margaret M.

doi:10.1364/ol.18.000977

Cited by 402 publications

(176 citation statements)

References 12 publications

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“…We just did not have any of those necessary optical things at that time. Then, in 1993, femtosecond-scale pulses became available with Ti : sapphire lasers [29]. I was lucky 6 years later to see a post-deadline paper at the 1999 CLEO meeting where a rainbow of colours was reported, generated at a 100 MHz rate using a mode-locked laser blasting its pulses through a specially designed multi-structured optical fibre [30].…”

Section: Observations About the Length Redefinition (By A Participant)mentioning

confidence: 99%

Learning from the time and length redefinitions, and the metre demotion

Hall

2011

Phil. Trans. R. Soc. A.

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After discussing several issues in a future redefinition of the kilogram, this paper considers the lessons that one might have learned from the analogous redefinitions of the metre and the second. The progress of length metrology was slow and steady, from seven digits reproducibility with the 1889 X-shaped metre prototype, to nine digits with Kr lamps, to 11 digits with the 1983 redefinition of the metre using the speed of light. With laser cooling, the Cs clock improved to 15, now 16, digits (and so also astronomical distance measurements could improve). Laser-cooled ions, and now atoms captured and cooled in an optical lattice, enable accuracy capability of three different optical frequency references to exceed 17 digits, i.e. better than time itself. The optical comb and related techniques vastly simplify frequency comparisons. Such progress stimulates a new satellite experiment, the STAR Mission (Space-Time Asymmetry Research). The goal is to test at the 1E-18 level frequency shifts owing to spatial anisotropy, position, gravitational potential and boost. The onboard optical clock will use stabilization to a molecular transition in I 2 or HCCH or CO 2 . The length etalons will be multiply redundant, with stability at the thermo-mechanical mirror motion limit. For a ULE glass etalon spacer (1987), I measure length creep approximately −1.5E-12/d, i.e. below 1E-14 over the 500 s satellite spin period.Keywords: choosing base units; frequency stability; optical atomic clocks; defining the speed of light; redefinition of the kilogram BackgroundWith the great progress in the international 'Avogadro project', working to make the connection between atomic mass and the International System of Units (SI) mass scales, it will ultimately be appropriate to consider a redefinition of the SI kilogram unit [1]. The existing definition, in place for more than a century, speaks in terms of the mass of a particular metallic blob being kept in Sèvres, France, by the BIPM (Bureau International des Poids et Mesures;

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Section: Observations About the Length Redefinition (By A Participant)mentioning

confidence: 99%

Learning from the time and length redefinitions, and the metre demotion

Hall

2011

Phil. Trans. R. Soc. A.

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“…They rapidly discerned how to generate an 8-fs pulse directly from a laser and how to identify the new physics that held the secret to the extreme stability of the fastest laser to date (4,5). Murnane and her group also disseminated detailed instructions on how to reproduce their laser to hundreds of scientists worldwide.…”

Section: Coherent Choicesmentioning

confidence: 99%

Profile of Margaret M. Murnane

Davis¹

2006

Proc. Natl. Acad. Sci. U.S.A.

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“…A basic oscillator -cavity configuration 22 is shown schematically in Figure 1. The laser is pumped by about 5 W from a continuous wave (CW) laser source, usually now an intracavity-doubled diode-pumped neodymium laser.…”

Section: Oscillatorsmentioning

confidence: 99%

Ultrafast Laser Technology and Spectroscopy

Reid

Wynne

2000

Encyclopedia of Analytical Chemistry

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Ultrafast laser technology and spectroscopy involves the use of femtosecond (10 −15 s) laser and other (particle) sources to study the properties of matter. The extremely short pulse duration allows one to create, detect and study very short‐lived transient chemical reaction intermediates and transition states. Ultrafast lasers can also be used to produce laser pulses with enormous peak powers and power densities. This leads to applications such as laser machining and ablation, generation of electromagnetic radiation at unusual wavelengths (such as millimeter waves and X‐rays), and multiphoton imaging. The difficulty in applying femtosecond laser pulses is that the broad frequency spectrum can lead to temporal broadening of the pulse on propagation through the experimental set‐up. In this article, we describe the generation and amplification of femtosecond laser pulses and the various techniques that have been developed to characterize and manipulate the pulses.

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Generation of 11-fs pulses from a self-mode-locked Ti:sapphire laser

Cited by 402 publications

References 12 publications

Learning from the time and length redefinitions, and the metre demotion

Learning from the time and length redefinitions, and the metre demotion

Profile of Margaret M. Murnane

Ultrafast Laser Technology and Spectroscopy

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