Welcome to our websites!
section02_bg(1)
head(1)

China Wholesale Photocell Characterization Factory – LPT-11 Serial Experiments on Semiconductor Laser – Labor

Short Description:


Product Detail

Product Tags

Related Video

Feedback (2)

With our superb management, potent technical capability and strict quality command procedure, we go on to provide our shoppers with trustworthy high-quality, reasonable costs and outstanding services. We goal at becoming considered one of your most trustworthy partners and earning your pleasure for Malus"s Law, Velocity Of Light, Microwave Polarization, Teamwork is encouraged at all levels with regular campaigns. Our research group experiments on various developments during the industry for improvement within the solutions.
China Wholesale Photocell Characterization Factory – LPT-11 Serial Experiments on Semiconductor Laser – Labor Detail:

Description

By measuring the power, voltage and current of a semiconductor laser, the students can understand the working characteristics of a semiconductor laser under continuous output. Optical multichannel analyzer is used to observe the fluorescence emission of semiconductor laser when the injection current is less than the threshold value and the spectral line change of laser oscillation when the current is larger than the threshold current.

Laser generally consists of three parts
(1) Laser working medium
The generation of laser must choose the appropriate working medium, which can be gas, liquid, solid or semiconductor. In this kind of medium, the inversion of the number of particles can be realized, which is the necessary condition to obtain laser. Obviously, the existence of metastable energy level is very beneficial to the realization of the number inversion. At present, there are nearly 1000 kinds of working media, which can produce a wide range of laser wavelengths from VUV to far infrared.
(2) Incentive source
In order to make the inversion of the number of particles appear in the working medium, it is necessary to use certain methods to excite the atomic system to increase the number of particles in the upper level. In general, gas discharge can be used to excite dielectric atoms by electrons with kinetic energy, which is called electrical excitation; pulse light source can also be used to irradiate working medium, which is called optical excitation; thermal excitation, chemical excitation, etc. Various excitation methods are visualized as pump or pump. In order to obtain the laser output continuously, it is necessary to pump continuously to keep the number of particles in the upper level more than that in the lower level.
(3) Resonant cavity
With suitable working material and excitation source, the inversion of particle number can be realized, but the intensity of stimulated radiation is very weak, so it can not be applied in practice. So people think of using optical resonator to amplify. The so-called optical resonator is actually two mirrors with high reflectivity installed face to face at both ends of the laser. One is almost total reflection, the other is mostly reflected and a little transmitted, so that the laser can be emitted through the mirror. The light reflected back to the working medium continues to induce new stimulated radiation, and the light is amplified. Therefore, the light oscillates back and forth in the resonator, causing a chain reaction, which is amplified like an avalanche, producing a strong laser output from one end of the partial reflection mirror.

Experiments 

1. Output power characterization of semiconductor laser

2. Divergent angle measurement of semiconductor laser

3. Degree of polarization measurement of semiconductor laser

4. Spectral characterization of semiconductor laser

Specifications

Item

Specifications

Semiconductor Laser Output Power< 5 mW
Center Wavelength: 650 nm
Semiconductor Laser Driver 0 ~ 40 mA (continuously adjustable)
CCD Array Spectrometer Wavelength Range: 300 ~ 900 nm
Grating: 600 L/mm
Focal Length: 302.5 mm
Rotary Polarizer Holder Minimum Scale: 1°
Rotary Stage 0 ~ 360°, Minimum Scale: 1°
Multi-Function Optical Elevating Table Elevating Range>40 mm
Optical Power Meter 2 µW ~ 200 mW, 6 scales

Product detail pictures:

China Wholesale Photocell Characterization Factory –  LPT-11 Serial Experiments on Semiconductor Laser – Labor detail pictures


Related Product Guide:

Our development depends on the advanced equipment ,excellent talents and continuously strengthened technology forces for China Wholesale Photocell Characterization Factory – LPT-11 Serial Experiments on Semiconductor Laser – Labor , The product will supply to all over the world, such as: Bangladesh, Uruguay, belarus, Adhering to the principle of "Enterprising and Truth-Seeking, Preciseness and Unity", with technology as the core, our company continues to innovate, dedicated to providing you with the highest cost-effective solutions and meticulous after-sales service. We firmly believe that: we're outstanding as we have been specialized.
  • Wide range, good quality, reasonable prices and good service, advanced equipment, excellent talents and continuously strengthened technology forces,a nice business partner.
    5 Stars By Alexandra from Sao Paulo - 2017.01.28 18:53
    Good quality, reasonable prices, rich variety and perfect after-sales service, it's nice!
    5 Stars By Melissa from London - 2017.06.16 18:23
    Write your message here and send it to us