White-light frequency comb generation with a diode-pumped Cr:LiSAF laser

Holzwarth, Ronald; Zimmermann, M.; Udem, Th.; Hänsch, Theodor W.; Rußbüldt, P.; Gäbel, K.; Poprawe, Reinhart; Knight, Jonathan C.; Wadsworth, William J.; Russell, P. St. J.

doi:10.1364/ol.26.001376

Cited by 88 publications

(35 citation statements)

References 12 publications

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“…However, only a few frequency combs have been demonstrated with DPSSLs even though a large number of femtosecond bulk laser oscillators have been demonstrated [27]. The first CEO frequency measurement from a DPSSL used Cr:LiSAF as the gain material operating at a center wavelength of 894 nm [28]. The 115-mW output power in 57-fs pulses at 93 MHz repetition rate was sufficient to generate an octave-spanning spectrum from 530 to 1060 nm.…”

Section: Introductionmentioning

confidence: 99%

Self-referencable frequency comb from a 170-fs, 1.5-μm solid-state laser oscillator

et al. 2009

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We report measurement of the first carrier-envelope offset (CEO) frequency signal from a spectrally broadened ultrafast solid-state laser oscillator operating in the 1.5 µm spectral region. The f -to-2f CEO frequency beat signal is 49 dB above the noise floor (100-kHz resolution bandwidth) and the free-running linewidth of 3.6 kHz is significantly better than typically obtained by ultrafast fiber laser systems. We used a SESAM mode-locked Er:Yb:glass laser generating 170-fs pulses at a 75 MHz pulse repetition rate with 110-mW average power. It is pumped by one standard telecom-grade 980-nm diode consuming less than 1.5 W of electrical power. Without any further pulse compression and amplification, a coherent octave-spanning frequency comb is generated in a polarization-maintaining highly-nonlinear fiber (PM-HNLF). The fiber length was optimized to yield a strong CEO frequency beat signal between the outer Raman soliton and the spectral peak of the dispersive wave within the supercontinuum. The polarizationmaintaining property of the supercontinuum fiber was crucial; comparable octave-spanning supercontinua from two non-PM fibers showed higher intensity noise and poor coherence. A stable CEO-beat was observed even with pulse durations above 200 fs. Achieving a strong CEO frequency signal from relatively long pulses with moderate power levels substantially relaxes the demands on the driving laser,

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Section: Introductionmentioning

confidence: 99%

Self-referencable frequency comb from a 170-fs, 1.5-μm solid-state laser oscillator

et al. 2009

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“…The first CEO detection from a DPSSL was demonstrated in 2001 by Holzwarth et al, in a Kerr-lens modelocked Cr:LiSAF laser [55]. This laser was pumped by two 670 nm diodes with a total power of 700 mW to produce 115 mW average output power at 894 nm in modelocked operation with ~60 fs pulse duration and 93 MHz repetition rate.…”

Section: Chromium-doped Lasersmentioning

confidence: 99%

Carrier-Envelope Offset Stabilized Ultrafast Diode-Pumped Solid-State Lasers

Schilt

Südmeyer

2015

Applied Sciences

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Optical frequency combs have been revolutionizing many research areas and are finding a growing number of real-world applications. While initially dominated by Ti:Sapphire and fiber lasers, optical frequency combs from modelocked diode-pumped solid-state lasers (DPSSLs) have become an attractive alternative with state-of-the-art performance. In this article, we review the main achievements in ultrafast DPSSLs for frequency combs. We present the current status of carrier-envelope offset (CEO) frequency-stabilized DPSSLs based on various approaches and operating in different wavelength regimes. Feedback to the pump current provides a reliable scheme for frequency comb CEO stabilization, but also other methods with faster feedback not limited by the lifetime of the gain material have been applied. Pumping DPSSLs with high power multi-transverse-mode diodes enabled a new class of high power oscillators and gigahertz repetition rate lasers, which were initially not believed to be suitable for CEO stabilization due to the pump noise. However, this challenge has been overcome, and recently both high power and gigahertz DPSSL combs have been demonstrated. Thin disk lasers have demonstrated the highest pulse energy and average power emitted from any ultrafast oscillator and present a high potential for the future generation of stabilized frequency combs with hundreds of watts average output power.

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“…Typically, very broad gain media are used for ultra-short pulse lasers, like Ti:Sapphire, Yb:KGW, Yb:fiber, Er:fiber, Er/Yb:glass, Cr:LiSaF. Their basic parameters and exemplary results achieved with those media are summarized in Table 1 [4][5][6][7][8][9][10]. The pulse temporal duration and spectral width are bound together with a parameter, called time-bandwidth product (TBP).…”

Section: Principles Of Mode-lockingmentioning

confidence: 99%

Fiber-based laser frequency combs

Soboń¹,

Abramski²

2012

Bulletin of the Polish Academy of Sciences: Technical Sciences

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Abstract. For the last decade a very attractive field of laser physics, namely the optical frequency comb technique, has been intensively developed. Fiber lasers play particular role in that area. The motivation of their development is obtaining broadband comb systems with well-defined and stable mods (comb teeth). This paper presents a basic overview devoted to the fiber-based optical frequency combs.

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White-light frequency comb generation with a diode-pumped Cr:LiSAF laser

Cited by 88 publications

References 12 publications

Self-referencable frequency comb from a 170-fs, 1.5-μm solid-state laser oscillator

Self-referencable frequency comb from a 170-fs, 1.5-μm solid-state laser oscillator

Carrier-Envelope Offset Stabilized Ultrafast Diode-Pumped Solid-State Lasers

Fiber-based laser frequency combs

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