Saturation and Polarization Characteristics of 1.56 μm Optical Probe Pulses in a LTG-GaAs Photoconductive Antenna Terahertz Detector

Estacio, Elmer; Hibi, Masakazu; Saito, Katsuya; Que, Christopher T.; Furuya, Takashi; Miyamaru, Fumiaki; Nishizawa, Seizi; Yamamoto, Kohji; Tani, Masahiko

doi:10.1007/s10762-013-9977-3

Cited by 9 publications

(7 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 5(c) demonstrates that the amplitude increases linearly as the probe power is raised from 5 mW to 20 mW. But after that, the amplitude turns to saturation when the probe beam power continues to rise414243.…”

Section: Resultsmentioning

confidence: 95%

A Broadband THz-TDS System Based on DSTMS Emitter and LTG InGaAs/InAlAs Photoconductive Antenna Detector

Zhang

et al. 2016

Sci Rep

View full text Add to dashboard Cite

We demonstrate a 4-f terahertz time-domain spectroscopy (THz-TDS) system using an organic crystal DSTMS as the THz emitter and a low temperature grown (LTG) InGaAs/InAlAs photoconductive antenna as the receiver. The system covers a frequency range from 0.2 up to 8 THz. The influences of the pump laser power, the probe laser power and the azimuthal angle of the DSTMS crystal on the time-domain THz amplitude are experimentally analyzed. The frequency accuracy of the system is verified by measuring two metamaterial samples and a lactose film in this THz-TDS system. The proposed combination of DSTMS emission and PC antenna detection realizes a compact and low-cost THz-TDS scheme with an ultra-broad bandwidth, which may promote the development and the applications of THz-TDS techniques.

show abstract

Section: Resultsmentioning

confidence: 95%

A Broadband THz-TDS System Based on DSTMS Emitter and LTG InGaAs/InAlAs Photoconductive Antenna Detector

Zhang

et al. 2016

Sci Rep

View full text Add to dashboard Cite

show abstract

“…For the optimization of the device, it is important to clarify the mechanism of the nonlinearity. For example, the order of the nonlinearity reported so far scatters in a range between 1 and 2 [1][2][3][4][5]. The ill-defined nonlinearity was explained qualitatively by a two-step absorption via the mid-gap states combined with the intraband transition [3].…”

Section: Introductionmentioning

confidence: 90%

On the power dependence of 1.5 μm excitation of low-temperature-grown GaAs photoconductive antennas

Jougataki

Tomiyasu

Hirao

et al. 2014

2014 39th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

View full text Add to dashboard Cite

show abstract

“…THz time‐domain‐spectroscopy (TDS) system based on emitters and detectors made from moderately annealed LTG GaAs and activated with femtosecond Yb:KGW laser pulses ( λ = 1030 nm) was demonstrated by us in Ref. ; while the other groups examined LTG GaAs photoconductive antennas operation as THz detectors and emitters activated with 1.5 µm laser pulses.…”

Section: Introductionmentioning

confidence: 99%

Spectral measurements of picosecond photoconductivity in terahertz detectors made from low temperature grown GaAs and GaInAs

Adamonis

Arlauskas

Krotkus

2015

Phys. Status Solidi A

View full text Add to dashboard Cite

We report on the performance of photoconductive terahertz detectors made from low temperature grown GaAs (LTG GaAs) and Ga0.7In0.3As (LTG GaInAs) in the wavelength range from 620 to 1550 nm. These THz detectors exhibited a significant sub‐bandgap photoconductivity due to the electron transitions from the defect band. A simple model evaluating picosecond photoconductivity was proposed to explain the experimental data. By comparing the modeling results with the experimental data, the defect band position was found to be at 0.77 and at 0.4 eV below the conduction band minimum for LTG GaAs and LTG GaInAs, respectively.

show abstract

Saturation and Polarization Characteristics of 1.56 μm Optical Probe Pulses in a LTG-GaAs Photoconductive Antenna Terahertz Detector

Cited by 9 publications

References 19 publications

A Broadband THz-TDS System Based on DSTMS Emitter and LTG InGaAs/InAlAs Photoconductive Antenna Detector

A Broadband THz-TDS System Based on DSTMS Emitter and LTG InGaAs/InAlAs Photoconductive Antenna Detector

On the power dependence of 1.5 μm excitation of low-temperature-grown GaAs photoconductive antennas

Spectral measurements of picosecond photoconductivity in terahertz detectors made from low temperature grown GaAs and GaInAs

Contact Info

Product

Resources

About

Saturation and Polarization Characteristics of 1.56 μm Optical Probe Pulses in a LTG-GaAs Photoconductive Antenna Terahertz Detector

Cited by 9 publications

References 19 publications

A Broadband THz-TDS System Based on DSTMS Emitter and LTG InGaAs/InAlAs Photoconductive Antenna Detector

A Broadband THz-TDS System Based on DSTMS Emitter and LTG InGaAs/InAlAs Photoconductive Antenna Detector

On the power dependence of 1.5 &#x03BC;m excitation of low-temperature-grown GaAs photoconductive antennas

Spectral measurements of picosecond photoconductivity in terahertz detectors made from low temperature grown GaAs and GaInAs

Contact Info

Product

Resources

About

On the power dependence of 1.5 μm excitation of low-temperature-grown GaAs photoconductive antennas