Title: Additional data for the publication "Cryogenic fiber-coupled electro-optic characterization platform for high-speed photodiodes"
Authors: Priyadarshi, Shekhar, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 2.4 Quantenelektronik, ORCID: 0000-0003-0840-8206
Tian, Hao, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 2.4 Quantenelektronik, ORCID: 0000-0001-5341-6841
Fernández Scarioni, Alexander, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 2.4 Quantenelektronik, ORCID: 0000-0003-2244-2582
Wolter, Silke, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 2.4 Quantenelektronik, ORCID: 0000-0001-7702-6813
Kieler, Oliver, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 2.4 Quantenelektronik, ORCID: 0000-0001-5193-8910

Show all authors (8)
Contributors: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Language:en
DOI:10.7795/720.20240115
Resource Type: Dataset / Measurement Data
Publisher: Physikalisch-Technische Bundesanstalt (PTB)
Rights: https://creativecommons.org/licenses/by/4.0/
CC-BY 4.0 International
Relationships: IsSupplementTo: DOI 10.1007/s10762-024-00966-1
Dates: Available: 2024-01-15
Classifications: INSPEC A4280W Ultrafast optical techniques ; INSPEC A7820J Electro-optical effects (condensed matter) ; INSPEC B1310 Waveguides and microwave transmission lines
File: Download File (application/zip) 198.52 kB (203288 Bytes)
MD5 Checksum: 4e6845ec4bb7c88823ce5ca0063f5828
SHA256 Checksum: 70556d9f9684b2b6bdd436cce37d3efbba0db586d38b9155a218424ae1248f07
Keywords: Ultrashort voltage pulses ; electro-optic sampling ; photodiode characterization ; cryogenic temperature ; fiber-chip coupling ; ultrafast lasers
Abstract: We have developed a cryogenic characterization platform for ultrafast photodiodes, whose time domain responses are extracted by electro-optic sampling using femtosecond laser pulses in a pump-probe configuration. The excitation of the photodiodes with the pump beam and the electro-optic sampling crystals with the probe beam are realized in a fully fiber-coupled manner. This allows us to use the characterization platform at different temperatures, ranging from cryogenic to room temperature. As an application example, we characterize the time-domain response of commercial p-i-n photodiodes with a nominal bandwidth of 20 GHz and 60 GHz at temperatures of 4 K and 300 K and in a large parameter range of photocurrent and reverse bias. For these photodiodes, we detect frequency components up to approximately 250 GHz, while the theoretical bandwidth of our sampling method exceeds 1 THz. Our measurements demonstrate a significant excitation power and temperature dependence of the photodiodes’ ultrafast time responses, reflecting, most likely, changes in carrier mobilities and electric field screening. Since our system is an ideal tool to characterize and optimize the response of fast photodiodes at cryogenic temperatures, it has a direct impact on applications in superconducting quantum technology such as the enhancement of optical links to superconducting qubits and quantum-accurate waveform generators.
Table of Contents: The dataset is a collection of CSV files. They can be read through import in Origin(preferred), Excel (preferred), notepad++, notepad.

File names are given according to figures in the article, e.g., Figure 1b.csv corresponds to Figure 1b of the article.

The first row in each file contains the name of the variables and their position in the figure (x or y axis), e.g. "Time (x)".
x-axes appears first as column and the corresponding y-axes follow it. One file may have more than one x-axis.

The second row reports the units of the variable. Where omitted, the quantity is normalized to the maximum value in the column.

The third row contains comments to identify which data corresponds to which plot on the figures in the paper.
Other: This work was partly supported by the EMPIR program co-financed by the Participating States and by the European Union’s Horizon 2020 research and innovation program (grant agreement 20FUN07 SuperQuant), by the European Union’s Horizon 2020 research and innovation program (grant agreement 899558 aCryComm), and by the German Federal Ministry of Education and Research (grant agreement 13N15934 QuMIC).
Funding: European Commission (EC), ISNI: 0000 0001 2162 673X, Grant Title: Microwave metrology for superconducting quantum circuits, Grant Number: EMPIR 20FUN07 SuperQuant
European Commission (EC), ISNI: 0000 0001 2162 673X, Grant Title: Attojoule Cryogenic Communication, Grant Number: H2020 899558 aCryComm
Bundesministerium für Bildung und Forschung (BMBF), ISNI: 0000 0001 2342 0436, Grant Title: Qubits Control by Microwave Integrated Circuits, Grant Number: 13N15934: QuMIC