Laser spectroscopic characterization of negatively charged nitrogen-vacancy (NV<sup>−</sup>) centers in diamond

Subedi, Shova D.; Fedorov, Vladimir V.; Peppers, Jeremy; Martyshkin, Dmitry; Mirov, Sergey; Shao, Linbo; Lončar, Marko

doi:10.1364/ome.9.002076

Cited by 52 publications

(38 citation statements)

References 22 publications

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“…The stimulated emission cross section σ se ∼ 3.22 × 10 −21 m 2 for our sample is obtained in a similar fashion to the study by Fraczek et al [29], but considering only the NV − centres (see Appendix B). The value we obtain for our system is comparable to the values obtained in the literature previously [19,29,30]. Near our working wavelength of 721 nm, the study by Fraczek et al [29] specifies a ratio between the stimulated emission cross section of NV − and NV 0 of slightly higher than 3.…”

Section: Numerical Resultssupporting

confidence: 89%

“…For example, photoionisation could be responsible for the quenching of fluorescence as has recently been described for low-power subdiffractionlimited microscopy using NV − centres [21]. The charge state switching dynamics between negative and neutral charge states of the NV centre due to the NIR wavelengths have also been taken into account in exploring the avenue of direct NV − stimulated emission [22,29,30]. This ionisation induced by NIR wavelengths naturally poses concerns about the realisation of the stimulated emission from NV − centres and its amplification inside a strong optical cavity for NIR wavelengths.…”

Section: Introductionmentioning

confidence: 99%

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Amplification by stimulated emission of nitrogen-vacancy centres in a diamond-loaded fibre cavity

et al. 2020

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Laser threshold magnetometry using the negatively charged nitrogen-vacancy (NV−) centre in diamond as a gain medium has been proposed as a technique to dramatically enhance the sensitivity of room-temperature magnetometry. We experimentally explore a diamond-loaded open tunable fibre-cavity system as a potential contender for the realisation of lasing with NV− centres. We observe amplification of the transmission of a cavity-resonant seed laser at 721 nm when the cavity is pumped at 532 nm and attribute this to stimulated emission. Changes in the intensity of spontaneously emitted photons accompany the amplification, and a qualitative model including stimulated emission and ionisation dynamics of the NV− centre captures the dynamics in the experiment very well. These results highlight important considerations in the realisation of an NV− laser in diamond.

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Section: Numerical Resultssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Amplification by stimulated emission of nitrogen-vacancy centres in a diamond-loaded fibre cavity

et al. 2020

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“…For decades, diamond crystals with nitrogen-vacancy centers have been considered as a potential lasing medium 2 , 27 , 28 . Nitrogen vacancy color centers exist in two states: negatively charged—NV − (with its zero-phonon line at 637 nm) and neutral—NV 0 (with its zero-phonon line at 575 nm) 1 .…”

Section: Introductionmentioning

confidence: 99%

NV– diamond laser

et al. 2021

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For the first time, lasing at NV− centers in an optically pumped diamond sample is achieved. A nanosecond train of 150-ps 532-nm laser pulses was used to pump the sample. The lasing pulses have central wavelength at 720 nm with a spectrum width of 20 nm, 1-ns duration and total energy around 10 nJ. In a pump-probe scheme, we investigate lasing conditions and gain saturation due to NV− ionization and NV0 concentration growth under high-power laser pulse pumping of diamond crystal.

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“…For example, insulated intrinsic diamond becomes a p-type semiconductor when doped with boron. When doped with nitrogen, spectroscopic properties such as absorption and emission spectra are easily influenced by the nitrogen vacancy (NV) center formed in the diamond (Wee et al, 2007;Subedi et al, 2019). As for optical nonlinearity, the negatively charged nitrogen vacancy defect center, NV-, in diamond has been investigated theoretically for one-and two-photon absorption properties involving the first excited state with the 3 A 2 -to-3 E transition (Lin et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Broadband Nonlinear Optical Response of Nitrogen-Doped Diamond

Xiao

Fang

et al. 2021

Front. Mater.

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A nitrogen-doped diamond crystal with (111) orientation was synthesized with an NaN3 additive in the FeNi-C system at a pressure of 6.5 GPa and a temperature of 1,310°C, using the temperature gradient growth (TGG) method. Spectroscopic properties such as the absorption spectrum and the Raman spectrum as well as the Fourier transform infrared (FTIR) spectrum were studied. FTIR spectroscopy of the C-N vibrational modes at 1,344 and 1,130 cm−1 suggested a nitrogen content of 310 ppm. Its nonlinear optical (NLO) response was investigated using the Z-scan technique under the femtosecond regime. Due to the presence of nitrogen defects, the synthesized crystal performed large nonlinear absorption under both 800- and 532-nm wavelength excitations. However, intrinsic diamond only experiences nonlinear refraction under these two wavelength excitations. Its broadband NLO properties indicated that nitrogen-doped diamond crystals were suitable for the application of ultrafast optical devices.

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Laser spectroscopic characterization of negatively charged nitrogen-vacancy (NV⁻) centers in diamond

Cited by 52 publications

References 22 publications

Amplification by stimulated emission of nitrogen-vacancy centres in a diamond-loaded fibre cavity

Amplification by stimulated emission of nitrogen-vacancy centres in a diamond-loaded fibre cavity

NV– diamond laser

Broadband Nonlinear Optical Response of Nitrogen-Doped Diamond

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Laser spectroscopic characterization of negatively charged nitrogen-vacancy (NV−) centers in diamond

Cited by 52 publications

References 22 publications

Amplification by stimulated emission of nitrogen-vacancy centres in a diamond-loaded fibre cavity

Amplification by stimulated emission of nitrogen-vacancy centres in a diamond-loaded fibre cavity

NV– diamond laser

Broadband Nonlinear Optical Response of Nitrogen-Doped Diamond

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Laser spectroscopic characterization of negatively charged nitrogen-vacancy (NV⁻) centers in diamond