GB/T 37275-2018 English PDF

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GB/T 37275-2018: Test method for lasing threshold and slope efficiency of Nd: YAG laser rods
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 37275-2018	119	Add to Cart	3 days	Test method for lasing threshold and slope efficiency of Nd: YAG laser rods	Valid

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Basic data

Standard ID: GB/T 37275-2018 (GB/T37275-2018)
Description (Translated English): Test method for lasing threshold and slope efficiency of Nd: YAG laser rods
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L90
Classification of International Standard: 31.030
Word Count Estimation: 6,639
Date of Issue: 2018-12-28
Date of Implementation: 2019-07-01
Older Standard (superseded by this standard): GB/T 11297.4-1989, GB/T 11297.5-1989
Regulation (derived from): National Standard Announcement No. 17 of 2018
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 37275-2018: Test method for lasing threshold and slope efficiency of Nd: YAG laser rods

---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.
Test method for lasing threshold and slope efficiency of Nd. YAG laser rods ICS 31.030 L90 National Standards of People's Republic of China Replace GB/T 11297.4-1989, GB/T 11297.5-1989 Laser threshold of yttrium-doped yttrium aluminum garnet laser rod Slope efficiency measurement method Published on.2018-12-28 2019-07-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces the GB/T 11297.4-1989 "Measurement method for the long-pulse laser threshold and slope efficiency of erbium-doped yttrium aluminum garnet laser rods. Method and GB/T 11297.5-1989 "Continuous Laser Threshold, Slope Efficiency and Output Power Measurement Method for Ytterbium-Doped Aluminum Garnet Laser Rods". Compared with GB/T 11297.4-1989 and GB/T 11297.5-1989, the main technical contents except the editorial changes are as follows. --- The scope of application has increased the measurement of glass and ceramic laser rods that can also be used for erbium-doped ions (see Chapter 1); --- Increased the measurement environment, processing technical requirements and safety protection requirements of the laser rod under test (see 4.1, 4.2 and 4.3); ---Modified requirements for measuring devices and measuring conditions (see Chapter 6, GB/T 11297.4-1989, Chapter 3, GB/T 11297.5- Chapter 3 of 1989); ---Modified measurement steps (see Chapter 7, GB/T 11297.4-1989, Chapter 4, GB/T 11297.5-1989 Chapter 5); --- Increased measurement precision requirements (see Chapter 9). This standard is under the jurisdiction of the Ministry of Industry and Information Technology (Electronics) of the People's Republic of China. This standard was drafted. The 11th Research Institute of China Electronics Technology Group Corporation. The main drafters of this standard. Zhu Jianhui, Qiu Yu. The previous versions of the standards replaced by this standard are. ---GB/T 11297.4-1989; ---GB/T 11297.5-1989. Laser threshold of yttrium-doped yttrium aluminum garnet laser rod Slope efficiency measurement method

1 Scope

This standard specifies the measurement of yttrium-doped aluminum garnet (Nd.Y3Al5O12, abbreviated as Nd. in a standard laser cavity with a wavelength of 1.06 μm. YAG) Method of continuous laser threshold, slope efficiency and output power of laser rods and methods of pulse energy, laser threshold and slope efficiency. This standard is applicable to the measurement of Nd.YAG, and can also be used for erbium-doped glass and ceramic laser rods.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 1185 optical parts surface rickets GB/T 11293-1989 Solid laser material terminology

3 Terms and definitions

The terms and definitions defined in GB/T 11293-1989 apply to this document.

4 requirements

4.1 Test conditions Unless otherwise specified, testing shall be carried out under the following conditions. a) Ambient temperature. 25 ° C ± 5 ° C; b) Relative humidity. ≤ 85%; c) The measurement system shall be in an environment free from significant vibrations, air currents and soot, and shall not interfere with the measurement results. 4.2 Technical requirements for processing laser rods to be tested In addition to special requirements, the laser bar should meet the following requirements. a) the parallelism of both ends should be better than or equal to 10"; b) the perpendicularity of the end face to the bar axis should be better than or equal to 5'; c) The surface of the end face should meet the requirements of GB/T 1185, the specific requirements are. B/0.8D0 × 0.05, C1 × 0.01, P0.1 (B is hemp Point; D0 is the diameter of the laser rod, the unit is mm; C is the scratch; P is the collapse); d) the end face flatness shall be better than or equal to λ/10 in the full diameter 90% diameter range (λ is 632.8 nm); e) The antireflection film is coated on both ends of the laser crystal, and the residual reflectance at a wavelength of 1064 nm is not more than 0.2%. 4.3 Security Safety protection requirements should meet the following requirements. ......

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