Title: Dataset for Combining Harmonic Laser Beams by Fiber Components for Refractivity–Compensating Two-Color Interferometry
Authors: Liu, Yang, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 5.4, Interferometrie an Maßverkörperungen
Röse, Anni, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 5.4, Interferometrie an Maßverkörperungen
Prellinger, Günther, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 5.4, Interferometrie an Maßverkörperungen
Köchert, Paul, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 5.4, Interferometrie an Maßverkörperungen
Zhu, Jigui, State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin, China
Pollinger, Florian, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 5.4, Interferometrie an Maßverkörperungen
Contributors: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Language:en
DOI:10.7795/720.20200618
Resource Type: Dataset / Measurement Data
Publisher: Physikalisch-Technische Bundesanstalt (PTB)
Rights: https://creativecommons.org/licenses/by/4.0/
CC BY 4.0 International
Relationships: IsReferencedBy: DOI 10.1109/JLT.2019.2960473
Dates: Available: 2020-06-18
Classifications: INSPEC A4281C ; INSPEC A4281F ; INSPEC A4281D ; INSPEC A0760L
File: Download File (application/zip) 60.22 MB (63144115 Bytes)
MD5 Checksum: dd63d7b89c80be4beccb05221e78f0bc
SHA256 Checksum: a6fafbf32a453238ac18dd4551a2acd809b70bc586d2d4ae9a9959556124de24
Keywords: beam properties, ; photonics crystal fiber (PCF) ; two–color interferometry ; wavelength division multiplexing (WDM) ; photonic crystal fiber ; wide-band transmission ; index of refraction ; polarization
Abstract: A perfect spatial overlap with multiple beams of different wavelengths is a prerequisite for multi–wavelength interferometry. Beam combination with the help of fibers seems to be an interesting method for this. We investigated three different types of fiber components, multi–mode wavelength division multiplexers (MM–WDMs), single–mode wavelength division multiplexers (SM–WDMs), and endlessly single–mode polarization maintaining photonic crystal fibers (PM–PCFs). All three seem potential candidates for a perfect spatial overlap of laser beams separated by an octave, i.e. fundamental and harmonic beams. We performed an experimental study on the impact of these components on polarization, wavefront, and coherence. These properties are essential for high–accuracy interferometry. As a test system, we used the fundamental and second harmonic beam of a Nd:YAG laser system at 1064 and 532 nm as a popular system in two–color interferometry for intrinsic refractive index compensation. The experimental results show the potential of PM–PCFs for this challenging application.
Other: Each data file within this dataset is related to one figure of the related publication:
Liu et al. Combining Harmonic Laser Beams by Fiber Components for Refractivity–Compensating Two-Color Interferometry. Journal of Lightwave Technology 2020, 38 (7), 1945 – 195. https://doi.org/10.1109/JLT.2019.2960473

Files with the extension DAT are space-separated tabular data which can be opened with any text editor.
Files with the extension BMP are standard image files which can be opened with most graphics programs.

The data is grouped in folders following the structure of the publication:

\Data\III degree and stability of polarization:
Data of section III Degree and Stability
..\Fig02 polarization of emitted beams
..\..\Fig02b and Fig02c.dat
..\..\Fig02d and Fig02e.dat
..\..\Fig02f and Fig02g.dat

..\Fig03 polarization conservation under external stress
..\..\Fig03a.dat
..\..\Fig03b.dat
..\..\Fig03c.dat

..\Fig04 noise induced by external stress
..\..\Fig04b.dat
..\..\Fig04c.dat
..\..\Fig04c_Raw_Data.dat
..\..\Fig04d.dat
..\..\Fig04d_Raw_Data.dat

\Data\IV wavefront quality:
Data of section IV Wavefront Quality
..\Fig05 emitted beam profiles
..\..\Fig05b.dat
..\..\Fig05b_MM-WDM532nm.bmp
..\..\Fig05c.dat
..\..\Fig05c_MM-WDM1064nm.bmp
..\..\Fig05d.dat
..\..\Fig05d_SM-WDM532nm.bmp
..\..\Fig05e.dat
..\..\Fig05e_SM-WDM1064nm.bmp
..\..\Fig05f.dat
..\..\Fig05f_PM-PCF532nm.bmp
..\..\Fig05g.dat
..\..\Fig05g_PM-PCF1064nm.bmp

\Data\V coherence:
Data of section V Coherence
Remark: This dataset was obtained within the 18SIB01 GeoMetre project. This project has received funding from the EMPIR programme co-financed by the Participating States and from the European Union's Horizon 2020 research and innovation programme.
Funding: European Commission, Grant Title: Large-scale dimensional measurements for geodesy, Grant Number: 18SIB01 GeoMetre