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GB/T 11297.12-2012: Test method for extinction ratio of optical crystal
Status: Valid GB/T 11297.12: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 11297.12-2012 | English | 139 |
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Test method for extinction ratio of optical crystal
| Valid |
GB/T 11297.12-2012
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| GB/T 11297.12-1989 | English | 199 |
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Test method for extinction ratio of LN, kDP and kD*P electrooptic crystal
| Obsolete |
GB/T 11297.12-1989
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PDF similar to GB/T 11297.12-2012
Basic data | Standard ID | GB/T 11297.12-2012 (GB/T11297.12-2012) | | Description (Translated English) | Test method for extinction ratio of optical crystal | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | L21 | | Classification of International Standard | 31.140 | | Word Count Estimation | 6,613 | | Older Standard (superseded by this standard) | GB/T 11297.12-1989 | | Quoted Standard | GB/T 11293-1989 | | Regulation (derived from) | National Standards Bulletin No. 41 of 2012 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the use of a wavelength of 632. 8 nm light waves along the optical axis of uniaxial optical crystal extinction ratio measurement method. This section applies to a wavelength of 632. 8 nm, 1 064 nm, 830 nm, 514 nm, 488 nm, 458 nm an | GB/T 11297.12-2012: Test method for extinction ratio of optical crystal---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS31.140
L21
National Standards of People's Republic of China
Replacing GB/T 11297.12-1989
Measurement of optical crystal extinction ratio
Issued on. 2013-06-01 2012-12-31 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
Rules in this section in accordance with GB/T 1.1-2009 given draft.
This Part replaces GB/T 11297.12-1989 measuring party "electro-optic crystal of lithium niobate, potassium dihydrogen phosphate and potassium phosphate dihydrate extinction ratio of deuterium
law".
This section compared with GB/T 11297.12-1989, have the following main changes.
--- The original part of the name has been modified. Original Part Name "electro-optic crystal of lithium niobate, potassium dihydrogen phosphate and potassium phosphate dihydrate extinction ratio of deuterium
Measuring method "to" measuring method "optical crystal extinction ratio. This part will also expand the scope of the standard to use other
Wavelength measurement uniaxial optical crystal axis and the like;
--- The original part of the measurement system extinction ratio indicators were modified, the original part of the measurement system indicators 100000, to be equipped with power output
Higher rate (P≥15mW) helium-neon laser. Now part of the measurement system metrics revised 50000.1 using output power
To 2mW of He-Ne laser;
--- Original part extinction ratio index representation only ××××× .1 This section adds decibels method;
--- This section would increase the measured crystal placed in the transmitted light intensity takes a maximum value when the orthogonal polarization system;
--- This part of the measurement system should be used to increase the necessary light shielding requirements;
--- This section increases the measuring environmental conditions;
--- This section increases the measured roughness light through two crystal end surface;
--- This section increases the aperture test systems for the provision of 5mm, the demand and supply sides also determined through negotiation based on the sample size
The size of the optical aperture;
--- This section increases the beam diameter of 90% of the diameter of the sample requirements, the demand and supply sides can also be determined based on a sample size of consultations
Given the size of the beam diameter.
This part is proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This part of the jurisdiction of the China Electronics Standardization Institute.
This in part by the China Electronics Technology Group Corporation Institute is responsible for drafting the twenty-sixth.
The main drafters of this section. Xie Kecheng, Jinzhong Hong, Yang Jie, Zhang Xiaomei.
This part of the standard replaces the previous editions are.
--- GB/T 11297.12-1989.
Measurement of optical crystal extinction ratio
1 Scope
This section GB/T 11297 provides for a wavelength of 632.8nm light waves along a single axis optical crystal axis direction extinction ratio measurement
Volume method.
This section applies to a wavelength of 632.8nm, 1064nm, 830nm, 514nm, 488nm, 458nm light waves and uniaxial
Consumers and other optical crystal axis light than measurements.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 11293-1989 solid-state laser material Terminology
3 Terms and Definitions
GB/T 11293-1989 defined terms and definitions apply to this document.
4 measuring principle
Wavelength 632.8nm measured along a bundle of light through a crystal optical axis disposed orthogonal polarization system tested crystals,
Rotates about the optical axis of the crystal, the maximum transmitted light intensity is measured, then rotate the polarization analyzer into a parallel system, measure the transmitted light intensity value, through
Through the formula (1) calculate the extinction ratio (EX).
EX = I‖/I⊥ (1)
Where.
EX --- extinction ratio measured crystals;
I‖ --- polarized parallel system transmitted light intensity value, in millivolts (mV);
I⊥ --- orthogonal polarization system maximum transmitted light intensity, in millivolts (mV).
Can also be used formula (2).
EX '= 10 × lg (I‖/I⊥) (2)
Wherein the extinction ratio EX 'decibels (dB).
5 Measurement System
Extinction ratio measuring system 1 shown in a schematic diagram, a wavelength of 632.8nm He-Ne laser light. FIG using other wavelengths of light
When the wave measurement, simply replace the corresponding optical power meter and laser wavelength.
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