Calibration Capability With Laser Capability Standard

Lipus, Lucija C.; Budzyn, Grzegorz; Rzepka, Janusz; Ačko, Bojan

doi:10.2507/daaam.scibook.2016.18

Cited by 4 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The frequency shall be periodically calibrated, in order to check the frequency stability and to yield the correction for the nominal vacuum wavelength value in the software [6]. In stabilized HeNe two-mode lasers, used in heterodyne systems, the frequencies of vertically and horizontally polarized component usually differ in a range of (1.5 to 2) MHz, which would contribute in up to 0.004•10 -6 •L difference in measured results.…”

Section: Instrumental Errorsmentioning

confidence: 99%

“…In order to be able to reach expected measurement accuracy, laser interferometers and corresponding air sensors shall be calibrated periodically [4]. The laser frequency is calibrated by comparison with primary standard laser [5][6][7], while whole instrumental system can be checked by means of comparison measurement with a reference laser interferometer, presented in this article.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of Laser Interferometer Measurement Uncertainty by Simulating Error Sources

Lipus¹,

Budzyn²,

Ačko³

2021

Int. j. simul. model.

View full text Add to dashboard Cite

The article presents measurement uncertainty analysis of accurate one-dimensional measurements with laser interferometers in precise industrial production and in calibration laboratories. To enable high measurement accuracy, environmental conditions shall be well controlled and laser interferometers, including air sensors, shall be calibrated periodically. Additionally, for calibration of measurement instruments and coordinate measuring machines, a positioning system, such as a video probe, shall be evaluated. In the presented research, the influencing parameters were observed on specific cases in laboratory measurement conditions, as examples of calibration systems that are applied in the accredited metrology laboratory (Laboratory for Production Measurement, Faculty of Mechanical Engineering). Through the review of possible error sources, which can be categorized into three groups -instrumental, environmental, and geometrical errors of the measuring system, the uncertainty budget was summarized with the aim to recognize and reduce the most influencing components and reach a proper measurement accuracy in real production environment.

show abstract

Section: Instrumental Errorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of Laser Interferometer Measurement Uncertainty by Simulating Error Sources

Lipus¹,

Budzyn²,

Ačko³

2021

Int. j. simul. model.

View full text Add to dashboard Cite

show abstract

“…The resonator in the laser is made of a tube located between two mirrors, which are both attached to piezoelectric transducer actuators, so the cavity length can be precisely adjusted by a voltage supply. The operational principle is to keep the cavity length resonant to one of seven hyper-fine transitions of molecular iodine electronically controlled by the third harmonic technique [9]. The user can lock the chosen frequency among seven peaks, named quadruplet d, e, f, g and triplet h, i, j.…”

Section: Experimental Set-upmentioning

confidence: 99%

“…The highly precise way of testing is comb measurement at a pilot laboratory, as recommended by CIPM at least once in ten years. For frequent tests inside the laboratory, a much less precise, yet a simple and effective method is a short measurement using a highly stable secondary laser at successively locked peaks [9]. Furthermore, a way that is more accurate is the inter-laboratory comparison by heterodyne matrix measurements carried out with a similar primary laser, which yields a mutual uncertainty of both lasers.…”

Section: Introductionmentioning

confidence: 99%

Influence of Intracavity Power on Frequency Characteristics of Iodine-Stabilized He-Ne Laser

Lipus

Katić

2020

TFAMENA

View full text Add to dashboard Cite

Following a shift in the industry to solid-state lasers during the past decade, resonator tubes which can be used in iodine-stabilized helium-neon (He-Ne) lasers are being discontinued by most manufacturers. After installing a replacement tube, it was discovered that its intracavity power was not equal to that of the original tube. The influence of this change on the uncertainty of frequency was determined over the course of several months. Mirrors in the optical cavity were adjusted for optimal intracavity power using short heterodyne beat frequency measurements with a reference laser. Data for stability and absolute value of the reference frequency were well-known and provided in advance by calibration with the comb method. The sensitivity coefficient of the output beam power was estimated from beat frequency deviations measured at several values of power inside the range of the stabile operation of the laser. Finally, a long-term measurement of beat frequency provided data about the stability and frequency offset.

show abstract

“…Laser interferometer position measurement systems provide very precise position or distance information [15]. Our system consists of a laser head HP 5528A, Agilent module 55292A, and a variety of optical components and accessories such as material sensors and air sensor.…”

Section: Laser Interferometermentioning

confidence: 99%

Metrological set-up for Calibrating 1D Line Scales with Sub-Micrometre Precision

Klobucar¹,

Štrbac²,

Hadžistević³

et al. 2017

DAAAM Proceedings

Self Cite

View full text Add to dashboard Cite

The use of the optical standards in the industry is constantly growing. A high resolution 1D measurement instrument developed for calibrating precision line scales with sub-micrometre measurement uncertainty is presented in this paper. The mechanical foundation of this instrument is based around a custom designed, numerically controlled multi-axis granite stage manufactured by Newport Micro-Controle Spectra-Physics, but specifically designed to meet the metrological requirements of the Laboratory for Production Measurement (LTM) at the University of Maribor. The system integrates a numerically controlled multi-axis stage, a laser interferometer, and a vision system for detecting line position. The measurement and the analysis processes are completely automated in order to minimize manual labour during the calibration process, but also increase the calibration accuracy. Increasing calibration accuracy leads up to better quality of industrial measurements which is required by modern precision industry. The metrological capabilities of the presented measurement set-up were verified by some practical test measurements. Indirect users of the results of this research will be all manufacturers of precise products such as automotive and other industries.

show abstract

Calibration Capability With Laser Capability Standard

Cited by 4 publications

References 0 publications

Analysis of Laser Interferometer Measurement Uncertainty by Simulating Error Sources

Analysis of Laser Interferometer Measurement Uncertainty by Simulating Error Sources

Influence of Intracavity Power on Frequency Characteristics of Iodine-Stabilized He-Ne Laser

Metrological set-up for Calibrating 1D Line Scales with Sub-Micrometre Precision

Contact Info

Product

Resources

About