Two-photon selective excitation of phonon-mode in diamond using mid-infrared free-electron laser

Sato, Oji; Yoshida, Kyohei; Zen, Heishun; Hachiya, Kan; Goto, T.; Sagawa, Takashi; Ohgaki, Hideaki

doi:10.1016/j.physleta.2019.126223

Cited by 8 publications

(5 citation statements)

References 36 publications

(64 reference statements)

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“…In the previous study, it was suggested that the fractured damage induced by intense lasers was responsible for the peak redshift and band broadening. 26) The result from the current study may further reinforce the causal hypothesis of redshift and broadening of the peak from the previous study.…”

Section: Resultssupporting

confidence: 88%

“…In our previous study, a signal with a peak at around −1306 cm −1 was observed when the same sample was irradiated by the MIR-FEL (the macropulse energy: 6.5 mJ) and the picosecond probe laser of 70 μJ with the spectrometer slit width of 1.0 mm. 26) This peak shows a redshift from the typical T 2g phonon peak which is 1332 cm −1 . Not only the redshift but also the broadening of the peak width up to 120 cm −1 was observed.…”

Section: Resultsmentioning

confidence: 89%

“…In this study, the S/N ratio has been greatly improved by the replacement and reviewing the measurement conditions. The scattered light measurement device, which was a photomultiplier tube in the previous experiment, 26) was replaced by the ICCD detector for a multi-channel measurement. As the result, the number of integrations of the spectrum has been increased.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…A part of the present authors attempted the same method to extend the mode-selective phonon excitation technique to infrared-inactive vibrational mode. 26) However, the surface of the sample was damaged because the irradiation intensity of the probe laser was too strong. The ASRS line-shape exhibited a red-shift of the peak to −1306 cm −1 with a broadening of the full width at a half maximum (FWHM) up to 120 cm −1 , which were reported to be typical for the damaged surface.…”

Section: Introductionmentioning

confidence: 99%

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Mode-selective excitation of an infrared-inactive phonon mode in diamond using mid-infrared free electron laser

Akasegawa¹,

Zen²,

Hachiya³

et al. 2021

Jpn. J. Appl. Phys.

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The direct demonstration was achieved for the selective excitation of the infrared-inactive T 2g mode (1332 cm−1) in the single crystal diamond by two-photon excitation using a mid-infrared free electron laser (MIR-FEL) as pump light. Anti-Stokes Raman scattering light at around −1339 cm−1 was observed with cooling at 5 K only when MIR-FEL whose wavenumber was that of one-half of the T 2g mode, 666 cm−1, was irradiated. Update of the probe system, i.e. the introduction of the image intensified CCD, made it possible to probe the scattering signal with a lower laser power density compared to our previous study, and it relieved the surface damage on the sample accompanied by laser irradiations which induced a red-shift and a band broadening of the mode in the previous study.

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Section: Resultssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 89%

Section: Experimental Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mode-selective excitation of an infrared-inactive phonon mode in diamond using mid-infrared free electron laser

Akasegawa¹,

Zen²,

Hachiya³

et al. 2021

Jpn. J. Appl. Phys.

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“…It is interesting to notice that Raman peak of diamond is redshifted from 1332 to 1306 cm −1 during photon excitation. [ 36 ] Similar to the tensile softening behavior, its physical mechanism originates from the lattice expansion caused by photon excitation. On the other hand, the triple degenerate T 2g mode is expected to split into two or three Raman vibrational modes.…”

Section: Resultsmentioning

confidence: 99%

A Novel Insight into the Strain Effect of T_2g Mode Splitting and Bandgap in Diamond

Liu

Robertson

et al. 2022

Physica Rapid Research Ltrs

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Herein, a comprehensive analysis of the change in the bandgap and Raman frequency of diamond under the uniaxial strain along the [100], [110] and [111] directions using first‐principles calculation is presented. The results demonstrate that the triple degenerate T2g mode splitting occurs spontaneously, owing to the strain‐induced symmetry breaking. Phonon splitting into two or three different modes demonstrates its anisotropy characteristics. The tensile softening and compressive stiffening of Raman frequencies depend on the bond length, bond angle, and bond strength response to the uniaxial strain. The bandgap decreases with increasing whether the tensile or compressive strain, which is attributed to the strain‐induced change of bond identities. These findings demonstrate that the uniaxial strain engineering has potential application in future diamond electronic devices.

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Observation of Selective Excitation of Raman Inactive Phonon Mode of Strontium Titanate Through Anti-Stokes Hyper-Raman Scattering Process

Bo,

Zen,

Yoshida

et al. 2024

J Infrared Milli Terahz Waves

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Two-photon selective excitation of phonon-mode in diamond using mid-infrared free-electron laser

Cited by 8 publications

References 36 publications

Mode-selective excitation of an infrared-inactive phonon mode in diamond using mid-infrared free electron laser

Mode-selective excitation of an infrared-inactive phonon mode in diamond using mid-infrared free electron laser

A Novel Insight into the Strain Effect of T_2g Mode Splitting and Bandgap in Diamond

Observation of Selective Excitation of Raman Inactive Phonon Mode of Strontium Titanate Through Anti-Stokes Hyper-Raman Scattering Process

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Two-photon selective excitation of phonon-mode in diamond using mid-infrared free-electron laser

Cited by 8 publications

References 36 publications

Mode-selective excitation of an infrared-inactive phonon mode in diamond using mid-infrared free electron laser

Mode-selective excitation of an infrared-inactive phonon mode in diamond using mid-infrared free electron laser

A Novel Insight into the Strain Effect of T2g Mode Splitting and Bandgap in Diamond

Observation of Selective Excitation of Raman Inactive Phonon Mode of Strontium Titanate Through Anti-Stokes Hyper-Raman Scattering Process

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Product

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A Novel Insight into the Strain Effect of T_2g Mode Splitting and Bandgap in Diamond