Compact GSGG:Cr3+:Nd3+laser with passiveQswitching

Данилов, А. А.; Evstigneev, V. L.; Il'ichev, Nikolai N; Malyutin, A A; Nikol'skiĭ, M Yu; Umyskov, A F; Щербаков, И. А.

doi:10.1070/qe1987v017n05abeh008975

Cited by 17 publications

(4 citation statements)

References 4 publications

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“…Crystals doped with TC Cr 4+ , Cr 5+ , and V 3+ ions are suitable for gain modulation of Nd lasers in the spectral range ≈1 μm ( :Gd 3 Sc 2 Ga 3 O 12 crystal laser with photochromic centers of Cr 4+ ions [187]. Pulses of duration 8 nsec and energy 8 mJ were soon produced with the same crystal in a short cavity (9 cm long) [188]. Later, gain of Nd lasers was modulated using other rare-earth garnet crystals such as Cr 4+ :Gd 3 Sc 2 Al 3 O 12 [189,190], Cr 4+ :Y 3 Sc 2 Ga 3 O 12 [166,190], Cr 4+ :Lu 3 Al 5 O 12 [81], and Cr 4+ :Gd 3 Ga 5 O 12 [191].…”

Section: Ndmentioning

confidence: 99%

“…Thus, generation and modulation functions can be combined in one medium. Self-modulation of laser gain in LM containing also ions with saturable absorption has been demonstrated [6,[187][188][189][190]208]. Auto-modulation of gain was observed in complex laser crystals such as Nd,Cr:Gd 3 Sc 2 Ga 3 O 12 , Nd,Cr:Gd 3 Sc 2 Al 3 O 12 , and Nd,Cr:Y 3 Sc 2 Ga 3 O 12 [6,[187][188][189][190]208].…”

Section: Ndmentioning

confidence: 99%

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Saturable absorbers based on tetrahedrally coordinated transition-metal ions in crystals (Review)

Malyarevich

Yumashev

2009

J Appl Spectrosc

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Published data on spectroscopic characteristics of saturable absorbers based on crystals doped with tetrahedrally coordinated transition-metal ions (Cr 2+ , Cr 4+ , Cr 5+ , V 3+ , Cr 2+ , Fe 2+ ) in addition to their use as passive Q-switches for solid-state lasers emitting in the visible and near-infrared regions are reviewed.Introduction. The use of saturable absorbers (SA) as passive Q-switches (PS) in solid-state lasers is an effective method for generating nanosecond and subnanosecond light pulses. This method differs favorably from active control of laser cavity gain by the lack of mechanical perturbations of the optical devices, additional sources of power supply, and external electrical control circuits. This simplifies the construction and operation of the laser and reduces its cost. Compact solid-state mini-lasers and ultra-small lasers (so-called microchip lasers) can be fabricated if PS are used.A SA is an optical material for which the transmission increases with increasing power density of the incident radiation. The SA should satisfy several requirements in order to be used as a PS. First of all this applies to SA characteristics at the laser operating wavelength such as absorption saturation energy density, coefficient of residual absorption in the fully bleached state, bleaching rise and fall time, and optical destruction threshold. The requirements for their absolute values depend on the spectroscopic properties of the lasing medium (LM) and the laser cavity parameters.In most instances with certain exceptions, SA based on tetrahedrally coordinated (TC) transition-metal ions of the iron group have bleaching relaxation times that are longer than the generation time of the laser pulses obtained using them. Such SA are usually called slowly relaxing. Relaxation processes leading to a restoration of their initial absorption can be ignored in analyzing their operation in a laser. In the simplest instance (if a four-level diagram is used for the spectroscopic model of the SA), the criterion for SA functioning as a PS is written [1-8]:

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Section: Ndmentioning

confidence: 99%

Section: Ndmentioning

confidence: 99%

Saturable absorbers based on tetrahedrally coordinated transition-metal ions in crystals (Review)

Malyarevich

Yumashev

2009

J Appl Spectrosc

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“…At present, there are successful examples of such dual active-passive media for a spectral range of 1 μm. They are materials based on garnet and vanadate single crystals doped by Nd 3+ (or Yb 3+ ) as a lasing ion and Cr 4+ (or Cr 5+ ) as a saturable absorber [133][134][135][136][137][138][139]. No data about developing the dual materials for eye-safe spectral range of 1.5 μm are available now.…”

Section: Absorption and Luminescence Properties Of Mas Glass-ceramicsmentioning

confidence: 99%

Optical applications of glass-ceramics

Алексеева¹,

Дымшиц²,

Tsenter³

et al. 2010

Journal of Non-Crystalline Solids

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“…In recent years, multifunctional laser crystals, such as the self-frequency-doubling, self-Raman conversion, selfmode locked, and self-Q-switched laser crystals, have been paid a lot of attention, because of their compactness, low loss, and simplicity in the laser design and application [1][2][3]. In the self-Q-switching regime, neodymium (Nd 3+ ) and chromium (Cr 4+ ) co-doped YAG crystals has been investigated in detail and identified to be an excellent self-Q-switched laser material.…”

Section: Introductionmentioning

confidence: 99%

Self-Q-switched Cr,Nd:ReVO4 (Re=Gd, Y) crystal lasers

Zhang

2012

ALT

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Self-Q-switched Cr,Nd:ReVO4 (Re=Gd, Y) crystallasers are demonstrated. The spectroscopic and self-Q-switched laser properties of Cr,Nd:ReVO4 arestudied. Polarized absorption spectra weremeasured at room temperature, which showed thatthe absorption bands display polarization characterand an absorption band of Cr5+ ions at 1110 nmenables the crystals to be self-Q-switched lasermaterials. The maximum pulse energy are achievedto be 1.12 μJ with Re=Gd , and the shortest pulsewidth is 85.8 ns with Re=Y. The results show thatCr,Nd:ReVO4 crystals are new potential self-Qswitchedlaser materials.

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Compact GSGG:Cr³⁺:Nd³⁺laser with passiveQswitching

Cited by 17 publications

References 4 publications

Saturable absorbers based on tetrahedrally coordinated transition-metal ions in crystals (Review)

Saturable absorbers based on tetrahedrally coordinated transition-metal ions in crystals (Review)

Optical applications of glass-ceramics

Self-Q-switched Cr,Nd:ReVO4 (Re=Gd, Y) crystal lasers

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