Frequency doubling crystal
Frequency doubling crystal is a sort of nonlinear optical crystal utilized for a frequency-doubling effect.
Fundamental residential or commercial properties
(1) Without main proportion;
(2) High transparency of essential and double frequency waves;
(3) The quadratic nonlinear electric polarization coefficient is large, due to the fact that the frequency-increasing conversion efficiency is proportional to the square of this coefficient;
(4) Partial matching capacity, especially non-critical matching capacity. Phase matching Angle and also temperature resistance must be in;
(5) Good optical uniformity, high damage threshold;
(6) Steady physical as well as chemical residential or commercial properties; The growth procedure is reasonably simple to get crystals big sufficient to reach usable lengths in the setting matching instructions.
BBO crystal
BBO crystal is a kind of nonlinear optical crystal with apparent thorough advantages as well as excellent efficiency. It has an extremely wide light transmittance array, an incredibly low absorption coefficient, and a weak piezoelectric ring effect.
Compared to various other electro-optic modulated crystals, BBO crystal has a greater termination ratio, a larger stage sustaining role, a greater anti-light damage limit, broadband temperature level matching as well as exceptional optical uniformity. It is beneficial to enhance the security of laser result power, especially for the triple frequency Nd: YAG laser has a large range of applications.
Key uses of BBO crystal:
(1) Made Use Of 1064nm Nd: YAG laser with a dual, three-way, quadruple as well as fivefold regularity.
(2) Used in dye laser and titanium gem laser of dual frequency, three-way frequency, sum regularity, difference regularity, etc
(3) For optical parametric oscillation, amplifier, etc.
BBO switch: The electro-optical Q button made from the BBO switch is commonly utilized in high rep frequency, high power electro-optical Q-switched laser, all-solid picosecond, and femtosecond regrowth amplification systems.
Because the turn-off time of the electro-optic Q button is much shorter than the optical break time of the acousto-optic Q button. As a result, the all-solid-state short-cavity Q-switched laser utilizing the BBO electro-optic Q button can create a high-energy laser with a pulse size of less than 4ns, which is the favored light of the electro-optic internal sculpting maker. BBO electro-optical Q button can be turned off and also hold up against up to 150W of oscillating optical power in the tooth cavity (laser output power as much as 50W) without water air conditioning.
Q-switched crystal
Q-tuning can be split into active Q-tuning as well as passive Q-tuning, while active Q-tuning can be separated into acousto-optical Q-tuning as well as electro-optical Q-tuning.
Commonly utilized easy Q-regulating crystals include: co: spinel, Cr: YAG, Cr: GSGG, V: YAG, Cr: YSO, and so on
Co: MgAl2O4 is a very reliable saturable absorber for passive Q-switched 1.5 μm “eye safety” lasers. The peak power pulsed laser produced by the passive Q-switching also has the qualities of small human eye damage, solid smoke penetration, small transmission attenuation, and so on. It can be extensively utilized in the field of room optical interaction, battlefield fast-ranging, laser radar of unmanned equipment, and so forth.
Gain medium
Gain tool (i.e. laser working material) refers to the product system made use of to realize the particle number inversion and produce the boosted radiation boosting result of light, sometimes also called laser gain medium, they can be solid (crystal, glass), gas (atomic gas, ionic gas, molecular gas), semiconductor and also liquid as well as other media.
The primary demand of the laser working product is to accomplish a big level of particle number inversion in between the particular energy levels of the working fragments, as well as to keep this inversion as efficiently as feasible in the entire laser exhaust procedure. To this end, it is required that the functioning compound have a proper power degree framework and also shift features.
All lasers can be separated right into the following classifications according to the different states of the working material:
(1) solid (crystal and glass) laser
The functioning material utilized by this kind of laser is made by blending metal ions which can generate stimulated radiation into the crystal or glass matrix to form the luminescence center;
(2) Gas lasers
Make use of the working substance gas, as well as according to the gas really generated by the excitation of the functioning particle buildings of the various, and also even more divided into the atomic gas laser, ion gas laser, molecular gas laser, excimer gas laser, etc;
(3) Fluid laser
This type of laser used by the working compounds mostly includes two kinds, one is organic fluorescent color service, the other is having rare earth steel ions of inorganic compound option, metal ions (such as Nd) play the function of working particles, and not natural substance fluid plays the function of the matrix;
(4) Semiconductor laser
This type of laser is a particular semiconductor product as the working compound to generate stimulated discharge, its concept is through a specific excitation way (electrical injection, optical pump or high-energy electron light beam injection), between the semiconductor material power band or in between the power band and also the pollutant level, with the excitation of the non-equilibrium carrier to achieve the bit number turnaround. Thus, boosted exhaust of light is created;
(5) Free electron laser
Which is a unique kind of brand-new laser, the functioning material is the directional totally free electron beam relocating at high speed in the room routine modification of magnetic field, as long as the rate of the totally free electron beam of light can be transformed to create a tunable systematic electromagnetic radiation, in concept, the systematic radiation spectrum can shift from the X-ray band to the microwave area, so it has a really attractive possibility.
Er: YAG
Er: YAG is a superb 2.94 μm laser crystal, which is extensively utilized in laser medical systems and also various other areas. Er: YAG crystal is one of the most vital working substances of 3mm laser, and has the attributes of high incline effectiveness, can work at area temperature laser, laser wavelength within the safe series of human eyes, etc 2.94 mm Er: YAG laser has been extensively utilized in the clinical area of surgery, cosmetic dermatology, dental care as well as various other therapies.
Benefits of Er: YAG
High incline effectiveness
Operate at room temperature
The laser working wavelength is fairly risk-free for human eyes
Ti: sapphire
Ti-doped sapphire (Ti3+: Al2O3) crystal is the most commonly used tunable laser strong material, with excellent laser qualities– large discharge transmission capacity (0.65 ~ 1.2 μm), superb thermal, optical, physical, chemical as well as mechanical homes. Titanium-doped sapphire lasers and their laser systems are unmatched in their phenomenal efficiency and also the resulting diversity of applications, such as proton treatment, accelerator physics, nuclear physics, infrared spectroscopy, and product characterization.
Erbium glass
Laser glass is a sort of strong laser material based on glass. It is extensively utilized in various kinds of solid-state laser light, and also has ended up being the main laser product of high power as well as high power laser.
The attributes of using glass as a laser functioning things are that it can commonly transform the chemical make-up as well as manufacturing procedure to obtain numerous crucial residential or commercial properties, such as fluorescence, high thermal security, low thermal expansion coefficient, unfavorable temperature level refraction coefficient, high optical uniformity, as well as simple to get a variety of shapes and sizes, low price, and so on.
Laser glass is a vital core material for high-power laser tools due to its characteristics of large size, excellent optical uniformity, inexpensive, and also high production efficiency.