GB/T 11297.3-2002 Measurement method for extinction ratio of neodymium-doped yttrium aluminum garnet laser rods

This part of GB/T 11297 specifies the measurement method for the extinction ratio of laser rods with a wavelength of 1 064 nm. This part is applicable to equiaxial laser rod crystals that can transmit light waves with a wavelength of 1 064 nm, and also to other similar crystals. GB/T 11297.3-2002 Measurement method for the extinction ratio of neodymium-doped yttrium aluminum garnet laser rods GB/T11297.3-2002 Standard download decompression password: www.bzxz.net

[CS 31.260
National Standard of the People's Republic of China
GB/T11297,3—2002
Replacement GB/T_1297.31S89
Test method for extinction ratio of Nd, YAG laser rods2002-12-04 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
2003-05-01 Implementation
GJ3/T11297 standard is divided into the following parts: First, the method of measuring the laser beam side scattering coefficient; the method of measuring the laser beam side scattering coefficient:—GB/T 11297.2
Measurement method of extinction ratio of laser rod: GB/T 11207:3
GB/T11297.32002
Measurement method of sustained pulse micro-light of laser and slope efficiency: GE/I 11297. 4
.-R/T 112S7.5
Measurement method of continuous laser emission value, slope efficiency and output power! 6 Display and measurement method of dislocation pits of chemical products! -GB/T112S7.6
-3/T1125?.7 Test method of electric charge and electric coefficient of chemical products; GB1197.8 Test method of pyroelectric coefficient of pyroelectric materials! Thermoelectric material dielectric loss angle tangent value tun contains the measurement method! -GB/T112S7.9
GB/11129?.15 Pyroelectric material Curie degree T, the test force reaches (B/T125?.11 Pyroelectric material dielectric test method: GB/1197.12 Electro-optical crystal Ni barrier, enough potassium and phosphoric acid one charge extinction ratio of the German method, partly replaced GB/T11297.3-198 Hot drink aluminum stone pick stone laser cotton extinction ratio measurement method 3 This part is derived from GB/1120Y, 3-1999 scanning light. The main changes are: use a semiconductor light group with a wavelength of 1S:m and a wavelength of 632.8nm. The cylinder efficiency laser is used as the light source, because the laser has a certain effect on the light of 632.8m. Absorption, and the 1064nm laser bar is long, which can more accurately reflect its extinction state. This part is proposed by the Ministry of Information Industry of China, and this part is published by the China Neutron Technology Standardization Institute (CFST). The reform unit of this part: North China Optical Technology Research Institute. The main drafters of this part are Zhu Jianhui, You Ying, T
■ Scope
Nd:YAG laser rod
Extinction ratio measurement method
GB/T11297.3—2002bzxZ.net
This part of E/T1127 specifies the measurement method of extinction ratio of micro-optical laser with a wavelength of 164nm. This part is applicable to the wavelength of 1664nm The equiaxial laser law of light waves that can be transmitted through the display body shall be used in accordance with the specifications for other similar products. 2 Normative references
The clauses in the following documents have become the terms of this part through the reference of G/T11297. For any reference of the same date, all the subsequent revisions (excluding other contents) or amendments shall not be applicable to this part. However, all parties who have reached an agreement on this part are encouraged to use the latest versions of these documents. For any referenced documents without a reference date, the latest version shall apply to this part.
GH/T11208—[S89 General terminology of optical materials 3 Terms and definitions
GB/1:234 Technical specifications and definitions in German This part of GB/T11297 shall apply to 4.1 Test performance 4.1.1 The test shall be carried out under the following atmospheric conditions: 225°C, 45% relative humidity, 70°C, >: kPa~JukP. 4.1.2 The test system shall be placed in an environment without obvious movement, airflow and smoke, and shall not have any interference that may affect the test results. 4.1.3 The test system shall adopt necessary dispersion tolerances. 4.2 Test principle The light intensity of the laser between the parallel optical microscope and the positive polarizing mirror is measured by the following formula: Ex =1)N Ig(Te/D)
Wherein:
F—extinction ratio, in decibel (d):
"—maximum value of the light intensity output under the orthogonal balanced light state, in mV:1:—light intensity value output under the parallel light protection state under the selected condition, in volt (mV), 4.3 Test system
4.3.1 Extinction ratio test system diagram
The composition of the extinction ratio test system is shown in Figure 1. 1
CB/T11297.3—2002
Micro-optical device
Expander
Light:
Yuefu Ya:
Micro-measurement laser band:
Find out:
·Display type device.
4.3.2 System requirements
4.3.2.1 The wavelength of the laser is 1061m
4.3.2.2 The extinction measurement device should be placed on the optical bench to avoid vibration. 4.3.2.3 The support of the sample is V-shaped with a variable adjustment device. Any stress factor that may affect the measurement result is allowed.
4.3.2.4 The power of the laser source should be less than 1.0 yuan. 4.3.2.5 The angle of each light source should be less than or equal to 3 mad: 4.3.2.6 Detector: Use a sensitive detector and operate in the linear region. 4.3.2.7 The extinction ratio of the system should be greater than 1/3. In addition to the processing technical requirements of laser support, the laser speed should meet the following requirements: the verticality of the end face (full face to floor axis) should be better than 5 or less, and the parallelism (flat/half) should be better than or equal to 1b. The surface of the micro-laser product must be polished, the diameter of the surface is 0.004mm-, the total number of "D" is 0.8D (D, the total length is 0.4-1m. The total length is greater than 2.4.5 Test preparation
In case of otherwise specified, the test number test should be further prepared as follows: .1 Prepare the test conditions;
b) The test system meets the requirements of 4.2; the laser sample meets the requirements of 4.1;
5 Test steps
5.1 Turn on the micro-filming system to minimize the light source frequency fluctuation 4.2.4, 5.2 Calibrate the system 5.2.1 Adjust the light bar to a perfect spot of 100 m: 5.2.2 Calibrate the system extinction ratio. When the system extinction ratio is greater than 40°C, you can select measurement 5.3.1 Adjust the light bar and the true diameter of the laser sample to 90% of the light. 5.3.2 Adjust the system to positive polarization state and record the test transmitted light intensity 1_GB/T112 97,3—2002
5.3.3 Place the laser sample into the V grid, make the beam incident on the center of the laser sample, rotate the laser, and measure and record the maximum value of the transmitted light intensity 1_
5.3.4 Adjust the system to the parallel light amplification state, measure and record the transmitted light in this direction to 1.5.4 Substitute the special light intensity 11 and 1 into the fraction (2) to calculate the extinction ratio of the micro-light forest: E, -×[I/(-[
Wherein:
-extinction ratio, unit is decibel (dB);
-light intensity value output under the normal polarization state of the laser, unit is millivolt (mV);
-maximum value of the light intensity output under the orthogonal polarization state of the laser, unit is millivolt (mV);
-light intensity value under the parallel polarization state of the laser, unit is millivolt (mV); 6. Special test report content
The test report shall include the following contents:
a! Test unit!
) Test unit:
Environmental conditions;
Operator name:
Test period:
Light grid size and shape
Record the light intensity, I and I:
Calculation results,
..(2 )
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