1030 nm optimized photoconductive receiver excited with &gt;20 mW of THz average power

Vogel, Tim; Mansourzadeh, Samira; Schulz, Romina S.; Nandi, Uttam; Preu, Sascha; Saraceno, Clara J.

doi:10.1109/irmmw-thz50927.2022.9895726

Cited by 2 publications

(2 citation statements)

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“…In spite of this difficulty in properly comparing DR values, we aim here to benchmark our setup in terms of DR to existing literature, thus we chose the same total acquisition time of 120 s as reported in the recent record DR from Kohlhaas et al [11]. In a previous conference submission, we used another receiver and reported, without a detailed parameter study, 80 dB in a 10 s measurement time [50]- [52], however this receiver was damaged due to its sensitivity to electrostatic discharges. In this follow-up detailed study, we use a second-generation receiver with a Zener-diode-based protection circuit to mitigate the danger of electrostatic discharge.…”

Section: Iii2 Noise Floor and Post-processing Of Thz Tracesmentioning

confidence: 99%

Performance of Photoconductive Receivers at 1030 nm Excited by High Average Power THz Pulses

Vogel,

Mansourzadeh,

Nandi

et al. 2024

IEEE Trans. THz Sci. Technol.

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In the last few years, many advances have been made in the demonstration of high-average power pulsed THz sources; however, little effort has been made to study compatible sensitive field-resolved detectors. Here, we investigate ErAs:InAlGaAs photoconductive receivers optimized for a probe wavelength of 1030 nm and thus suitable for the new class of high-power ultrafast Ytterbium-based laser sources for THz generation and detection. The performance of the receiver is tested with a few-cycle THz source with high average power up to 20 mW and the dynamic range and saturation behavior of the receiver is thoroughly characterized. Under optimized settings, a dynamic range of more than 115 dB is reached in a 120 s measurement time with 20 mW of THz average power, which is among the highest reported values to date. By reviewing the state-of-the art in TDS measurement and post-processing technology, we identify current limitations and guidelines for further increasing the dynamic range towards 150 dB in short measurement times using high average power THz systems with sensitive photoconductive receivers.

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Section: Iii2 Noise Floor and Post-processing Of Thz Tracesmentioning

confidence: 99%

Performance of Photoconductive Receivers at 1030 nm Excited by High Average Power THz Pulses

Vogel,

Mansourzadeh,

Nandi

et al. 2024

IEEE Trans. THz Sci. Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…In spite of this difficulty in properly comparing DR values, we aim here to benchmark our setup in terms of DR to existing literature, thus we chose the same total acquisition time of 120 s as reported in the recent record dynamic range from Kohlhaas et al [11]. In a previous conference submission, we used another receiver and reported, without a detailed parameter study, 80 dB in a 10 s measurement time [48]- [50], however this receiver was damaged due to its sensitivity to electrostatic discharges. In this follow-up detailed study, we use a secondgeneration receiver with a Zener-diode-based protection circuit to mitigate the danger of electrostatic discharge.…”

Section: Ii2 Noise Floor and Post-processing Of Thz Tracesmentioning

confidence: 99%