# Estimate of the minimal coherence length of probe optical radiation in interferometry

## Abstract

The minimal coherence length of probe optical radiation sufficient for formation of a homogeneous interference structure is estimated. The estimate is based on the analysis of the interference structure in the intensity distribution of the field scattered by rough surfaces and point objects and also formed in interferometers. Analysis was performed for the field intensity detected for the time T > 10{tau}{sub c} (under the condition that the coherence time of the probe radiation is {tau}{sub c} > 3/{omega}{sub 0}, where {omega}{sub 0} is the central frequency of the emission spectrum). It is shown that the minimal coherence length L{sub c} of the probe radiation, at which the homogeneous stratified interference structure of the scattered field can be still formed, is 8{lambda} ({lambda} is the central wavelength). The possibility of using this result for determining the maximal information content of the method of low-coherence optical tomography is analysed. (optical field parameters)

- Authors:

- Moscow Institute of Physics and Technology (State University), Dolgoprudnyi, Moscow Region (Russian Federation)

- Publication Date:

- OSTI Identifier:
- 21466590

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Quantum Electronics (Woodbury, N.Y.); Journal Volume: 37; Journal Issue: 1; Other Information: DOI: 10.1070/QE2007v037n01ABEH013191

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COHERENCE LENGTH; EMISSION SPECTRA; INTERFERENCE; INTERFEROMETERS; INTERFEROMETRY; PROBES; SURFACES; TOMOGRAPHY; VISIBLE RADIATION; WAVELENGTHS; DIAGNOSTIC TECHNIQUES; DIMENSIONS; ELECTROMAGNETIC RADIATION; LENGTH; MEASURING INSTRUMENTS; RADIATIONS; SPECTRA

### Citation Formats

```
Bakut, P A, and Mandrosov, V I.
```*Estimate of the minimal coherence length of probe optical radiation in interferometry*. United States: N. p., 2007.
Web. doi:10.1070/QE2007V037N01ABEH013191.

```
Bakut, P A, & Mandrosov, V I.
```*Estimate of the minimal coherence length of probe optical radiation in interferometry*. United States. doi:10.1070/QE2007V037N01ABEH013191.

```
Bakut, P A, and Mandrosov, V I. Wed .
"Estimate of the minimal coherence length of probe optical radiation in interferometry". United States.
doi:10.1070/QE2007V037N01ABEH013191.
```

```
@article{osti_21466590,
```

title = {Estimate of the minimal coherence length of probe optical radiation in interferometry},

author = {Bakut, P A and Mandrosov, V I},

abstractNote = {The minimal coherence length of probe optical radiation sufficient for formation of a homogeneous interference structure is estimated. The estimate is based on the analysis of the interference structure in the intensity distribution of the field scattered by rough surfaces and point objects and also formed in interferometers. Analysis was performed for the field intensity detected for the time T > 10{tau}{sub c} (under the condition that the coherence time of the probe radiation is {tau}{sub c} > 3/{omega}{sub 0}, where {omega}{sub 0} is the central frequency of the emission spectrum). It is shown that the minimal coherence length L{sub c} of the probe radiation, at which the homogeneous stratified interference structure of the scattered field can be still formed, is 8{lambda} ({lambda} is the central wavelength). The possibility of using this result for determining the maximal information content of the method of low-coherence optical tomography is analysed. (optical field parameters)},

doi = {10.1070/QE2007V037N01ABEH013191},

journal = {Quantum Electronics (Woodbury, N.Y.)},

number = 1,

volume = 37,

place = {United States},

year = {Wed Jan 31 00:00:00 EST 2007},

month = {Wed Jan 31 00:00:00 EST 2007}

}