The laser formation in laser sensors depends onThe essential characteristics of laserThese characteristics are determined by specific physical conditions. To achieve laser generation in laser sensors, the following must be metThree basic conditions：
1. Excitation source (stimulated radiation)
The generation of laser requires an excitation source, which provides electronic energy through an external energy source to excite atoms, molecules, or ions in the laser medium. The excitation source usually excites the laser medium through current, light, or chemical reactions to achieve a certain energy level. This process is laser driven; Stimulated Radiation "; **External energy causes electrons to transition to higher energy levels, and when electrons fall back from the excited state to the ground state, they release photons of the same wavelength as the incident light.
2. Laser medium (gain medium)
Laser medium is the substance that carries energy in a laser, usually a gas, solid, or liquid. The choice of laser medium determines the wavelength of the laser. Different laser media can generate lasers of different wavelengths (such as helium neon lasers, carbon dioxide lasers, semiconductor lasers, etc.). In this medium, after being excited, atoms or molecules will release a large number of photons, which will excite more atoms or molecules to release photons, forming a gain of light and ensuring the continuous emission of laser.
3. Optical resonant cavity (feedback mechanism)
Optical resonant cavity is an important component of laser devices. It consists of two mirrors, one of which is a fully reflective mirror and the other is a partially reflective mirror. Light is reflected multiple times in a laser medium, and each reflection enhances the intensity of the light. Through this feedback mechanism, photons emitted from the laser medium will continuously collide with excited molecules, producing more photons and enhancing the energy of light. This feedback ensures the concentration and intensity of the laser beam, resulting in a high brightness and high directionality laser beam.
summarize
In laser sensors, the formation of laser requires the following three conditions to be met:
excitation sourceProvide external energy to excite atoms or molecules in the laser medium into excited states.
Laser mediumUsed to generate and gain photons, determining the wavelength of the laser.
Optical resonant cavityEnhance the energy of photons through reflection and feedback mechanisms to ensure stable laser output.
These conditions work together to ensure that the laser sensor can generate stable and high-quality laser beams for various measurement and detection tasks.
Site Navigation
-
European Office:
line centura nr 20 smoked by the Jews of Rome. NIA POST CODE 077010 -
Southeast Asia Office:
Thailand：48/14 Soi Roong Ruang, Ratchapisek Road,Samsen Nok Sub-district, Huai Khwang DistrictBangkok 10310 Singapore：18 Boon Lay Way,TradeHub 2l#07-132,Singapore 609966 -
Company address:
Sat Dascälu, Comuna Dascälu, Strada CÃMPINA Nr. 3, CAMERA Nr. 3, Judet llfov
