Generation of laser radiation by color centers in diamond crystals (review)

Mironov, V. P.; Protasova, E. A.; Lipatov, E. I.; Мартынович, Е. Ф.

doi:10.1063/5.0062002

Cited by 7 publications

(6 citation statements)

References 18 publications

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“…where β is the absorption index, σ is the absorption cross section. In the literature [7][8][9][10][11], sufficiently close values of the absorption and emission cross-sections (the cross-section of the radiative transition) are given. In our calculations, we used a certain value of the absorption cross section averaged according to literature data σ = 2.8•10 -17 cm 2 , which gives the value of centers concentration N = 6.6•10 17 cm -3 , with an absorption index at the maximum of the band 18.5 cm -1 .…”

Section: Discussion Of the Resultsmentioning

confidence: 99%

“…The prospects of using various color centers in diamonds to generate laser radiation based on the calculation of the achievable optical gain have been reported in many papers. The analysis of these works [7] showed that NV centers with zero phonon lines (ZPL) at 575 and 638 nm have a high gain, wide absorption and luminescence bands, and a short excited state lifetime. This indicates the prospects of using NV centers as active laser centers in the spectral range 650 -750 nm.…”

Section: Introductionmentioning

confidence: 99%

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Peculiarities of nitrogen-vacancy centers’ superluminescence in diamond under optical pumping at 532 nm

et al. 2022

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In the context of the NVdiamond laser creation [1], an urgent task is to determine the characteristics of diamonds that can affect the laser generation. This work is aimed at investigating the mechanisms of the creation of superluminescence in diamond under the action of optical pumping by the second harmonic of the Nd:YAG laser (λ=532nm).It was found that when the HPHT diamond is irradiated by 532 nm radiation with an intensity above ~ 2.0 MW/cm 2 , a nonlinear intensity increasing in the spectral region 700-750 nm is manifested against the background of the spontaneous photoluminescence spectrum, which, with a further pumping intensity increasing turns into a pronounced peak of superluminescence with a maximum of about 718 nm. An increase in the pumping intensity from 2.7 to 46 MW/cm 2 widened this peak at half-maximum from 13 to 19 nm. At high levels of pumping intensity, nonlinear pumping radiation absorption and accumulation of NV centers in the excited state were detected.The position of the photoluminescence band was calculated depending on different values of the population inversion density of the color centers, taking into account the diamond's own absorption spectrum. The calculation results are close to the experimental data.

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Section: Discussion Of the Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Peculiarities of nitrogen-vacancy centers’ superluminescence in diamond under optical pumping at 532 nm

et al. 2022

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“…The spectral data, taking into account the spectral sensitivity of the device and the transmission of the optical fiber, were accumulated in a digital file. pump pulse, its duration, as well as the energy and duration of the luminescence pulse were recorded by an Ophir sensor and an avalanche fotodiode (7). The pump energy per pulse was 80 mJ for a pulse duration of about 10 ns at half maximum.…”

Section: Methodsmentioning

confidence: 99%

“…The results of studies of defects (color centers) with the aim of creating, for example, a laser active medium have been published in many papers. An analysis of these publications [7][8][9][10] shows that diamonds with NV centers, i.e., color centers based on nitrogen atoms embedded in the diamond lattice, look very promising for solving this problem. These centers have broad absorption and luminescence bands, a high gain, and a short lifetime at the excited level, which indicates the possibility of creating laser-active media on their basis.…”

Section: Introductionmentioning

confidence: 99%

Superluminescence of NV centers in diamond pumped by the second harmonic of a Nd:YAG laser

Genin¹,

Mironov²,

Tel’minov³

et al. 2022

8th International Congress on Energy Fluxes and Radiation Effects

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In the light of the creation of a diamond laser [1], an urgent task is to determine the characteristics of diamonds in order to determine the range in which such lasers can be created not in isolated cases. This work is aimed at studying the mechanisms of creating superluminescence in diamond under the action of optical pumping by the second harmonic of an ND:YAG laser (λ = 532 nm). It was found that, upon pulsed excitation of a diamond by an ND:YAG laser with a pump intensity above ~2.0 MW/cm2 in the spectral range 700–750 nm, a nonlinear increase in intensity appears against the background of the spontaneous photoluminescence spectrum, which, with a further increase in the pump intensity, turns into a pronounced superluminescence peak with a maximum at about 718 nm. An increase in the pump intensity from 2.7 to 46 MW/cm2leads to the broadening of this peak at half maximum from 13 to 19 nm. At high levels of pump intensity, nonlinear absorption of pump radiation and accumulation of NV centers in the excited state were found. The position of the photoluminescence band was calculated as a function of various values of the inversion density of the populations of color centers, taking into account the intrinsic absorption spectrum of diamond. The calculation results are close to the experimental data.

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“…For this reason, a laser out of NV centers is the goal to enable crossing boundaries in NV center sensitivities. However, despite several studies (24,25,(27)(28)(29)(30)(31)(32)(33), very strong stimulated emission signals or magnetic field-dependent coherent readout have not been achieved so far.…”

Section: Introductionmentioning

confidence: 99%

Magnetic-field-dependent stimulated emission from nitrogen-vacancy centers in diamond

et al. 2022

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Negatively charged nitrogen-vacancy (NV) centers in diamond are promising magnetic field quantum sensors. Laser threshold magnetometry theory predicts improved NV center ensemble sensitivity via increased signal strength and magnetic field contrast. Here, we experimentally demonstrate laser threshold magnetometry. We use a macroscopic high-finesse laser cavity containing a highly NV-doped and low absorbing diamond gain medium that is pumped at 532 nm and resonantly seeded at 710 nm. This enables a 64% signal power amplification by stimulated emission. We test the magnetic field dependency of the amplification and thus demonstrate magnetic field–dependent stimulated emission from an NV center ensemble. This emission shows an ultrahigh contrast of 33% and a maximum output power in the milliwatt regime. The coherent readout of NV centers pave the way for novel cavity and laser applications of quantum defects and diamond NV magnetic field sensors with substantially improved sensitivity for the health, research, and mining sectors.

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Generation of laser radiation by color centers in diamond crystals (review)

Cited by 7 publications

References 18 publications

Peculiarities of nitrogen-vacancy centers’ superluminescence in diamond under optical pumping at 532 nm

Peculiarities of nitrogen-vacancy centers’ superluminescence in diamond under optical pumping at 532 nm

Superluminescence of NV centers in diamond pumped by the second harmonic of a Nd:YAG laser

Magnetic-field-dependent stimulated emission from nitrogen-vacancy centers in diamond

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