# Multi-Scale Simulation for Transient Absorption Spectroscopy under Intense Few-Cycle Pulse Laser

## Abstract

**:**

## 1. Introduction

## 2. Materials and Methods

## 3. Numerical Results and Discussion

## 4. Conclusions

## Acknowledgments

## Conflicts of Interest

## References

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**Figure 1.**The laser field of the pump (blue-dashed line) and probe (red-solid line) as the function of the position from the surface. (

**a**) Incidental laser fields at time 0 fs. (

**b**) Transmitted and reflected laser fields at time 26.6 fs.

**Figure 2.**Change of the (

**a**) transmission, (

**b**) reflectivity, and (

**c**) absorption of the probe pulse. Positive value (negative value) filled by red (blue). The vertical solid line presents the optical band gap.

**Figure 3.**The laser field amplitude is shown in (

**a**). Time-energy map of the (

**b**) $\Delta T$, (

**c**) $\Delta R$, and (

**d**) $\Delta R$ under the pump laser intensity of $1\times {10}^{11}$ W/cm${}^{2}$. The time 0 is set to the peak of the laser intensity at diamond surface. The vertical solid lines present the peak of the field amplitude.

**Figure 4.**The laser field amplitude is shown in (

**a**). Time-energy map of the (

**b**) $\Delta T$, (

**c**) $\Delta R$, and (

**d**) $\Delta Ab$ under the pump laser intensity of $4\times {10}^{11}$ W/cm${}^{2}$. The time 0 is set to the peak of the laser intensity at diamond surface.

**Figure 5.**Exchange-correlation potential dependence on Tr-DFKE for (

**a**) $\Delta T$, (

**b**) $\Delta R$, and (

**c**) $\Delta Ab$. The pump-probe time-delay is same as Figure 1. Thick solid lines represent the mBJ potential and thin solid lines represent the LDA potential. Dashed lines represent the independent particle model. The vertical thick (thin) solid lines indicate the calculated optical band gap by mBJ (LDA) potential.

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**MDPI and ACS Style**

Otobe, T. Multi-Scale Simulation for Transient Absorption Spectroscopy under Intense Few-Cycle Pulse Laser. *Photonics* **2016**, *3*, 63.
https://doi.org/10.3390/photonics3040063

**AMA Style**

Otobe T. Multi-Scale Simulation for Transient Absorption Spectroscopy under Intense Few-Cycle Pulse Laser. *Photonics*. 2016; 3(4):63.
https://doi.org/10.3390/photonics3040063

**Chicago/Turabian Style**

Otobe, Tomohito. 2016. "Multi-Scale Simulation for Transient Absorption Spectroscopy under Intense Few-Cycle Pulse Laser" *Photonics* 3, no. 4: 63.
https://doi.org/10.3390/photonics3040063