Femtosecond pulse generation by a dispersion-compensated, coupled-cavity, mode-locked Ti:sapphire laser

Spence, D. E.; Sibbett, W.

doi:10.1364/josab.8.002053

Cited by 36 publications

(13 citation statements)

References 11 publications

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“…Interacting with positive dispersion in the cavity 11221, SPM prevents broad-band solid-state lasers from producing femtosecond pulses, and stops pulse shortening typically beyond 1 ps [59], [86], [88]. However, with a net negative dispersion in the cavity the same systems generate pulses of sub-100-fs duration [86], [88], [123]. This tremendous improvement in ultrashort pulse performance clearly demonstrates the essential role of passive phase modulation in femtosecond solid-state lasers.…”

Section: Steady-state Passive Mode Lockingmentioning

confidence: 98%

Femtosecond solid-state lasers

Krausz

Fermann

Brabec

et al. 1992

IEEE J. Quantum Electron.

255

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The emergence of new ultrafast optical modulation techniques has opened the way towards a new femtosecond laser technology based on solid-state gain media. This paper addresses the requirements for stable ultrashort pulse generation in these novel femtosecond sources. The theoretical considerations are backed up by experimental results obtained with a number of different laser systems. The conclusions drawn from the presented theoretical and experimental investigations provide general guidelines for the design and optimization of a wide range of femtosecond solid-state laser oscillators.

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Section: Steady-state Passive Mode Lockingmentioning

confidence: 98%

Femtosecond solid-state lasers

Krausz

Fermann

Brabec

et al. 1992

IEEE J. Quantum Electron.

255

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“…This contrasts with the situation in fiber lasers, where the characteristic lengths are much shorter than the cavity segments, so large changes in the temporal and spectral profiles will generally occur. Removal of the anomalous-GVD segment of a Kerr-lens modelocked solid-state laser produces pulses with large nonlinear chirp [61], but the goal is to eliminate that segment from fiber lasers without sacrificing pulse quality. The key question then is whether enhanced self-amplitude modulation through chirped-pulse spectral filtering can stabilize high-energy coherent pulses without the dispersion map.…”

Section: Femtosecond Fiber Lasers Without Intracavity Anomalous Dispementioning

confidence: 99%

High‐energy femtosecond fiber lasers based on pulse propagation at normal dispersion

Wise

Chong

Renninger

2008

Laser & Photonics Reviews

550

286

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The generation and stable propagation of ultrashort optical pulses tend to be limited by accumulation of excessive nonlinear phase shifts. The limitations are particularly challenging in fiber-based devices, and as a result, short-pulse fiber lasers have lagged behind bulk solid-state lasers in performance. This article will review several new modes of pulse formation and propagation in fiber lasers. These modes exist with large normal cavity dispersion, and so are qualitatively distinct from the soliton-like processes that have been exploited effectively in modern femtosecond lasers but which are also quite limiting. Self-similar evolution can stabilize high-energy pulses in fiber lasers, and this leads to order-of-magnitude increases in performance: fiber lasers that generate 10 nJ pulses of 100 fs duration are now possible. Pulse-shaping based on spectral filtering of a phase-modulated pulse yields similar performance, from lasers that have no intracavity dispersion control. These new modes feature highly-chirped pulses in the laser cavity, and a theoretical framework offers the possibility of unifying our view of normal-dispersion femtosecond lasers. Instruments based on these new pulse-shaping mechanisms offer performance that is comparable to that of solid-state lasers but with the major practical advantages of fiber.Representative power spectrum and autocorrelation of pulse generated by a fiber laser with large normal cavity dispersion (top row). Calculated power spectrum, temporal intensity and phase, and evolution of a self-similar pulse in a laser (bottom row).

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“…It should be noted that the transition to multipulse operation is not the sole scenario of the stability loss in the continuous-wave (CW) mode-locked solid-state lasers: the automodulational instability can produce regular as well as nonregular oscillations of the single pulse or the so-called picosecond collapse with the abrupt transition from the femtosecond to the picosecond generation [17], [18]. The stable multipulse operation in the negative GDD region was experimentally observed in Ti:sapphire [1], [19]- [21], Cr:LiSGaF [22] and Yb:KYW [23] Kerr-lens mode-locked lasers as well as in Nd:glass [24], Ti:sapphire [4], and Cr :YAG [25] lasers mode locked by a semiconductor saturable absorber mirror. In [26], the tendency toward multipulse generation was reported for the positive-GDD regime in the Cr :ZnSe laser with passive mode locking initiated by acousto-optical modulation.…”

Section: Introductionmentioning

confidence: 99%

Multipulse operation and limits of the Kerr-lens mode-locking stability

Калашников

Sorokin

Sorokina

2003

IEEE J. Quantum Electron.

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Abstract-Numerical analysis in combination with the experimental data for Cr 2+ :ZnSe as well as Ti:sapphire lasers reveal the following main mechanisms of multiple-pulse generation for the Kerr-lens mode-locked solid-state lasers: 1) continuum amplification due to a spectral loss growth for ultrashort or chirped pulses and 2) a bounded perturbation rise for high-energy pulses. The role of such laser parameters as gain saturation and relaxation, saturable and unsaturable loss, self-phase modulation, Kerr-lensing, and pump intensity is analyzed. This analysis provides basic directions for single-pulse stability enhancement and for multiple-pulse generation control.

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Femtosecond pulse generation by a dispersion-compensated, coupled-cavity, mode-locked Ti:sapphire laser

Cited by 36 publications

References 11 publications

Femtosecond solid-state lasers

Femtosecond solid-state lasers

High‐energy femtosecond fiber lasers based on pulse propagation at normal dispersion

Multipulse operation and limits of the Kerr-lens mode-locking stability

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