Vacuum ultraviolet frequency combs generated by a femtosecond enhancement cavity in the visible

Birgitta Bernhardt; Akira Ozawa; Andreas Vernaleken; Ioachim Pupeza; Jan Kaster; Yohei Kobayashi; Ronald Holzwarth; Ernst Fill; Ferenc Krausz; Theodor W. Hänsch; Thomas Udem

doi:10.1364/OL.37.000503

Vacuum ultraviolet frequency combs generated by a femtosecond enhancement cavity in the visible

Birgitta Bernhardt, Akira Ozawa, Andreas Vernaleken, Ioachim Pupeza, Jan Kaster, Yohei Kobayashi, Ronald Holzwarth, Ernst Fill, Ferenc Krausz, Theodor W. Hänsch, Thomas Udem

Research output: Contribution to journal › Article › peer-review

Abstract

We present the first (to our best knowledge) femtosecond enhancement cavity in the visible wavelength range for ultraviolet frequency comb generation. The cavity is seeded at 518 nm by a frequency-doubled Yb fiber laser and operates at a peak intensity of 1.2texttimes1013 W/cm2. High harmonics of up to the ninth order ($57 nm) are generated in an intracavity xenon gas jet. Intracavity high harmonic powers of several milliwatts for the third harmonic order and microwatts for the fifth harmonic order prove the potential of the ``green cavity'' as an efficient ultraviolet frequency comb source for future spectroscopic experiments. A limiting degradation effect of the cavity mirrors is avoided by operating at a constant oxygen background pressure.

Original language	English
Pages (from-to)	503-505
Number of pages	3
Journal	Optics Letters
Volume	37
Issue number	4
DOIs	https://doi.org/10.1364/OL.37.000503
Publication status	Published - 1 Feb 2012
Externally published	Yes

Keywords

Ultrafast lasers
UV, EUV, and X-ray lasers
Multiharmonic generation
High power fiber lasers
High power lasers
Infrared lasers
Infrared radiation
Laser sources
Pulsed fiber lasers

Fields of Expertise

Advanced Materials Science

Access to Document

10.1364/OL.37.000503

http://ol.osa.org/abstract.cfm?URI=ol-37-4-503

Cite this

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title = "Vacuum ultraviolet frequency combs generated by a femtosecond enhancement cavity in the visible",

abstract = "We present the first (to our best knowledge) femtosecond enhancement cavity in the visible wavelength range for ultraviolet frequency comb generation. The cavity is seeded at 518 nm by a frequency-doubled Yb fiber laser and operates at a peak intensity of 1.2texttimes1013 W/cm2. High harmonics of up to the ninth order ($57 nm) are generated in an intracavity xenon gas jet. Intracavity high harmonic powers of several milliwatts for the third harmonic order and microwatts for the fifth harmonic order prove the potential of the ``green cavity'' as an efficient ultraviolet frequency comb source for future spectroscopic experiments. A limiting degradation effect of the cavity mirrors is avoided by operating at a constant oxygen background pressure.",

keywords = "Ultrafast lasers, UV, EUV, and X-ray lasers, Multiharmonic generation, High power fiber lasers, High power lasers, Infrared lasers, Infrared radiation, Laser sources, Pulsed fiber lasers",

author = "Birgitta Bernhardt and Akira Ozawa and Andreas Vernaleken and Ioachim Pupeza and Jan Kaster and Yohei Kobayashi and Ronald Holzwarth and Ernst Fill and Ferenc Krausz and H{\"a}nsch, {Theodor W.} and Thomas Udem",

year = "2012",

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doi = "10.1364/OL.37.000503",

language = "English",

volume = "37",

pages = "503--505",

journal = "Optics Letters",

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TY - JOUR

T1 - Vacuum ultraviolet frequency combs generated by a femtosecond enhancement cavity in the visible

AU - Bernhardt, Birgitta

AU - Ozawa, Akira

AU - Vernaleken, Andreas

AU - Pupeza, Ioachim

AU - Kaster, Jan

AU - Kobayashi, Yohei

AU - Holzwarth, Ronald

AU - Fill, Ernst

AU - Krausz, Ferenc

AU - Hänsch, Theodor W.

AU - Udem, Thomas

PY - 2012/2/1

Y1 - 2012/2/1

N2 - We present the first (to our best knowledge) femtosecond enhancement cavity in the visible wavelength range for ultraviolet frequency comb generation. The cavity is seeded at 518 nm by a frequency-doubled Yb fiber laser and operates at a peak intensity of 1.2texttimes1013 W/cm2. High harmonics of up to the ninth order ($57 nm) are generated in an intracavity xenon gas jet. Intracavity high harmonic powers of several milliwatts for the third harmonic order and microwatts for the fifth harmonic order prove the potential of the ``green cavity'' as an efficient ultraviolet frequency comb source for future spectroscopic experiments. A limiting degradation effect of the cavity mirrors is avoided by operating at a constant oxygen background pressure.

AB - We present the first (to our best knowledge) femtosecond enhancement cavity in the visible wavelength range for ultraviolet frequency comb generation. The cavity is seeded at 518 nm by a frequency-doubled Yb fiber laser and operates at a peak intensity of 1.2texttimes1013 W/cm2. High harmonics of up to the ninth order ($57 nm) are generated in an intracavity xenon gas jet. Intracavity high harmonic powers of several milliwatts for the third harmonic order and microwatts for the fifth harmonic order prove the potential of the ``green cavity'' as an efficient ultraviolet frequency comb source for future spectroscopic experiments. A limiting degradation effect of the cavity mirrors is avoided by operating at a constant oxygen background pressure.

KW - Ultrafast lasers

KW - UV, EUV, and X-ray lasers

KW - Multiharmonic generation

KW - High power fiber lasers

KW - High power lasers

KW - Infrared lasers

KW - Infrared radiation

KW - Laser sources

KW - Pulsed fiber lasers

U2 - 10.1364/OL.37.000503

DO - 10.1364/OL.37.000503

M3 - Article

SN - 0146-9592

VL - 37

SP - 503

EP - 505

JO - Optics Letters

JF - Optics Letters

IS - 4

ER -