RU2009118234A - METHOD FOR OPTICAL MEASUREMENTS FOR DETERMINING MATERIAL PROPERTIES - Google Patents
METHOD FOR OPTICAL MEASUREMENTS FOR DETERMINING MATERIAL PROPERTIES Download PDFInfo
- Publication number
- RU2009118234A RU2009118234A RU2009118234/28A RU2009118234A RU2009118234A RU 2009118234 A RU2009118234 A RU 2009118234A RU 2009118234/28 A RU2009118234/28 A RU 2009118234/28A RU 2009118234 A RU2009118234 A RU 2009118234A RU 2009118234 A RU2009118234 A RU 2009118234A
- Authority
- RU
- Russia
- Prior art keywords
- angle
- reflection coefficient
- distortions
- absence
- radiation
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract 11
- 238000005259 measurement Methods 0.000 title claims abstract 3
- 230000003287 optical effect Effects 0.000 title claims abstract 3
- 230000005855 radiation Effects 0.000 claims abstract 8
- 238000001228 spectrum Methods 0.000 claims abstract 8
- 230000000694 effects Effects 0.000 claims abstract 2
- 238000004611 spectroscopical analysis Methods 0.000 claims abstract 2
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
1. Способ оптических измерений для определения свойств материалов, заключающийся в том, что посредством модуляционной спектроскопии измеряют спектры, отличающийся тем, что измеряют спектр угла θ1, соответствующего минимуму зависимости коэффициента отражения светового излучения от угла падения, и спектр угла θ2, соответствующего точке перегиба угловой зависимости коэффициента отражения, при этом осуществляют модуляцию угла падения излучения на исследуемый образец с амплитудой, обеспечивающей отсутствие искажений θ1 и θ2, связанных с нелинейностью угловой зависимости коэффициента отражения, или пренебрежимо малое влияние нелинейности угловой зависимости коэффициента отражения. ! 2. Способ по п.1, отличающийся тем, что выбором частоты модуляции f обеспечивают достаточно высокое отношение сигнал/шум для выделения из шума полезного сигнала, необходимого для измерения характеристических углов при отсутствии искажений θ1 и θ2. ! 3. Способ по п.1, отличающийся тем, что при измерении спектров углов используют линейно поляризованное излучение, его р-компоненту. ! 4. Способ по п.1, отличающийся тем, что для модуляции угла падения излучения на исследуемый образец с амплитудой, обеспечивающей отсутствие искажений θ1 и θ2, связанных с нелинейностью угловой зависимости коэффициента отражения, амплитуду выбирают от 0,2 до 2 градусов. ! 5. Способ по п.2, отличающийся тем, что при выборе частоты модуляции f, обеспечивающей достаточно высокое отношение сигнал/шум для выделения из шума полезного сигнала, необходимого для измерения характеристических углов при отсутствии искажений θ1 и θ2, используют значения от 5 до 200 Гц. 1. The method of optical measurements for determining the properties of materials, which consists in the fact that modulation spectroscopy measure spectra, characterized in that they measure the spectrum of the angle θ1 corresponding to the minimum dependence of the reflection coefficient of light radiation on the angle of incidence, and the spectrum of the angle θ2 corresponding to the inflection point of the angle the dependences of the reflection coefficient, while modulating the angle of incidence of radiation on the test sample with an amplitude that ensures the absence of distortions θ1 and θ2 associated with not ineynostyu angular dependence of the reflection coefficient or negligible effect of the nonlinearity of the angular dependence of the reflection coefficient. ! 2. The method according to claim 1, characterized in that the choice of modulation frequency f provides a sufficiently high signal-to-noise ratio for extracting from the noise a useful signal necessary for measuring characteristic angles in the absence of distortions θ1 and θ2. ! 3. The method according to claim 1, characterized in that when measuring the spectra of angles using linearly polarized radiation, its p-component. ! 4. The method according to claim 1, characterized in that for modulating the angle of incidence of radiation on the test sample with an amplitude that ensures the absence of distortions θ1 and θ2 associated with the nonlinearity of the angular dependence of the reflection coefficient, the amplitude is selected from 0.2 to 2 degrees. ! 5. The method according to claim 2, characterized in that when choosing a modulation frequency f that provides a sufficiently high signal-to-noise ratio to extract from the noise a useful signal necessary for measuring characteristic angles in the absence of distortions θ1 and θ2, values from 5 to 200 are used Hz
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2009118234/28A RU2423684C2 (en) | 2009-05-13 | 2009-05-13 | Optical measurement method for material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2009118234/28A RU2423684C2 (en) | 2009-05-13 | 2009-05-13 | Optical measurement method for material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2009118234A true RU2009118234A (en) | 2010-11-20 |
| RU2423684C2 RU2423684C2 (en) | 2011-07-10 |
Family
ID=44058165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2009118234/28A RU2423684C2 (en) | 2009-05-13 | 2009-05-13 | Optical measurement method for material |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2423684C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020146933A1 (en) * | 2019-01-14 | 2020-07-23 | Общество С Ограниченной Ответственностью "Эссентоптикс" | Spectrophotometer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1520404A1 (en) * | 1988-03-29 | 1989-11-07 | Предприятие П/Я А-3771 | Method of measuring refractive index of absorbing media |
| RU2065148C1 (en) * | 1994-04-05 | 1996-08-10 | Производственное объединение "Казанский оптико-механический завод" | Method of measurement of refractive index of transparent and absorbing media |
| US6753961B1 (en) * | 2000-09-18 | 2004-06-22 | Therma-Wave, Inc. | Spectroscopic ellipsometer without rotating components |
-
2009
- 2009-05-13 RU RU2009118234/28A patent/RU2423684C2/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020146933A1 (en) * | 2019-01-14 | 2020-07-23 | Общество С Ограниченной Ответственностью "Эссентоптикс" | Spectrophotometer |
| CN113544479A (en) * | 2019-01-14 | 2021-10-22 | 伊森特光学公司 | Spectrophotometer |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2423684C2 (en) | 2011-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102621083A (en) | Method and system for measuring rock optical parameters based on Terahertz time-domain spectroscopy | |
| CN104007115B (en) | Method and system for detecting jewelry structure by using terahertz time domain spectroscopic technique | |
| NZ703875A (en) | Spectroscopic analysis | |
| CN105699317A (en) | Terahertz time-domain spectrograph capable of entering at fixed angle and simultaneously detecting transmission and reflection | |
| CN105628642A (en) | Method for improving frequency spectrum signal-to-noise ratio of tera-hertz optical detection system | |
| EP2518518A3 (en) | Method for automatically setting frequency span in a spectrum analyzer | |
| WO2009137122A3 (en) | Methods, devices and kits for peri-critical reflectance spectroscopy | |
| WO2005074525A3 (en) | Entangled-photon fourier transform spectroscopy | |
| EA200701744A1 (en) | NOISE EVALUATION AT ONE FREQUENCY THROUGH NOISE MEASUREMENT AT OTHER FREQUENCIES | |
| WO2009050830A1 (en) | Authentication system and portable medium for authentication | |
| WO2008154349A3 (en) | Method and apparatus for localized polarization sensitive imaging | |
| CN104749132A (en) | A method for measuring the content of azodicarbonamide in flour | |
| EP2233905A3 (en) | Transmitted wavefront measuring method, refractive-index distribution measuring method, method of manufacturing optical element, and transmitted wavefront measuring apparatus | |
| CN110927122B (en) | Phase type SPR detection device and method based on interference spectrum | |
| CN106596499A (en) | Real-time Raman spectrum calibration method | |
| TW200712480A (en) | Unevenness inspecting apparatus and unevenness inspecting method | |
| WO2020130942A1 (en) | A non-destructive system and method for determining the quality of chinese herb using terahertz time-domain spectroscopy | |
| CN102087211B (en) | Terahertz spectral analysis device and detection method for biofilm | |
| CN106546556B (en) | Method for identifying quality of porcelain-like tableware based on terahertz time-domain spectroscopy | |
| RU2009118234A (en) | METHOD FOR OPTICAL MEASUREMENTS FOR DETERMINING MATERIAL PROPERTIES | |
| CN104048922A (en) | Method for measuring polarization degree and polarization angle of fluorescence spectrum | |
| CN101482504A (en) | Test device for detecting material laser space scattering characteristics and its detecting method | |
| JPWO2008099442A1 (en) | Spectral analysis apparatus and spectral analysis method | |
| ATE350656T1 (en) | DEVICE AND METHOD FOR DETERMINING THE CHROMATIC DISPERSION OF OPTICAL COMPONENTS | |
| CN101403687B (en) | Method for detecting infrared spectrometer stability based on monocrystaline silicon piece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20140514 |