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

Калашников, В. Л.; Sorokin, Evgeni; Sorokina, Irina T.

doi:10.1109/jqe.2002.807204

Cited by 61 publications

(49 citation statements)

References 47 publications

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“…An output spectrum of 50-60 nm FWHM is centered around 2350-2400 nm where calculated intracavity group-delay dispersion is about −1000 fs 2 . Further decrease of the net GDD to about −500 fs 2 resulted in harmonic multiple-pulse operation regime, as predicted by theory [14]. We could also obtain mode-locked operation in the normal (dissipative soliton) dispersion regime (Fig.…”

Section: Methodssupporting

confidence: 80%

Femtosecond operation and self-doubling of Cr:ZnS laser

2011

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Section: Methodssupporting

confidence: 80%

Femtosecond operation and self-doubling of Cr:ZnS laser

2011

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“…We found the high third-order optical nonlinearity of the Cr:ZnS crystal (9010 -16 cm 2 /W) to be the main power-limiting factor in our experiments. Further increasing of the pump power resulted in unstable double-pulsing and harmonic mode-locking regimes [21] for all available output couplers. With 4.5% output coupler we were able to obtain a comparatively stable double-pulsed mode-locking regime with a reproducible pulse separation of about 2.4 ps.…”

mentioning

confidence: 99%

Kerr-lens mode-locked Cr:ZnS laser

Tolstik¹,

Sorokin²,

Sorokina³

2013

Opt. Lett.

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Received Month X, XXXX; revised Month X, XXXX; accepted Month X, XXXX; posted Month X, XXXX (Doc. ID XXXXX); published Month X, XXXX We report the soft-aperture Kerr-lens mode-locked Cr:ZnS laser, generating 550 mW of 69-fs nearly transform-limited pulses at 2.39 µm wavelength. The pulse energy reached 3.8 nJ at 145 MHz repetition rate, limited by the onset of doublepulsing. This corresponds to the shortest-pulse and highest-energy direct femtosecond laser source in the mid-IR. Dispersion compensation was achieved by a single chirped mirror and a thin sapphire plate, making the laser design simple, compact and very stable, operating at ambient air and room temperature. The superb thermal and mechanical properties of Cr:ZnS, exceeding those of Cr:ZnSe and many established femtosecond laser crystals should allow further scaling of output power.

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“…10 The lasers are prone to producing multiple pulses if not properly mode-locked. 11 During Q-switched operation, 15 ns duration pulses have been produced at pulse repetitions frequencies (PRFs) ranging from 5 to 40 KHz. Output powers as high as 1.6 W have been produced.…”

Section: Pulsed Lasersmentioning

confidence: 99%

Chromium-doped chalcogenide lasers

Carrig

Wagner

Alford

et al. 2004

Solid State Lasers and Amplifiers

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Broadly tunable near-and mid-infrared lasers are of interest for a variety of applications including high-resolution spectroscopy, metrology, pumping of nonlinear optical frequency converters such as optical parametric oscillators (OPOs) and standoff chemical sensing. Tunable laser sources in the 2-3 µm region include Cr 2+ -doped chalcogenide lasers; cryogenic systems, such as color center lasers; limited tunability devices, such as Tm and Ho lasers, gas or chemical lasers, and diode lasers; and nonlinear optical devices such as OPOs. Transition-metal-doped chalcogenide lasers are of high interest because of their high versatility, broad room-temperature wavelength tunability, high optical efficiencies, and their potential to be scaled to high powers via direct diode or fiber laser pumping. To date, continuouswave, gain-switched, Q-switched and mode-locked laser operation has been demonstrated. Material advantages include broad absorption and emission bands, high fluorescence quantum efficiencies at room temperature, high gain crosssections, and minimal loss mechanisms such as excited-state absorption or upconversion. Additionally, the materials can be produced by a variety of methods, including several direct growth techniques and diffusion doping. The principal material disadvantages include a relatively large change in refractive index with temperature (large dn/dT), which can induce thermal lensing, and a short, microseconds, energy storage time. In this paper we review fundamental material properties, the current state-of-the-art of continuous-wave and pulsed Cr 2+ doped chalcogenide lasers, and recent research results.

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

Cited by 61 publications

References 47 publications

Femtosecond operation and self-doubling of Cr:ZnS laser

Femtosecond operation and self-doubling of Cr:ZnS laser

Kerr-lens mode-locked Cr:ZnS laser

Chromium-doped chalcogenide lasers

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