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CoupletechCo.Ltd.

CoupletechCo.Ltd.
location Jinan, China

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Our Products

  1. Laser Crystal 25 Products available
  2. Optical Element 22 Products available
  3. Nolinear Optical Crystal 17 Products available
  4. Pockels Cell 14 Products available
  5. Polarizing Optic 12 Products available
  6. Diode Pumped Pulsed 3 Products available
  7. Pockels Cell Driver 3 Products available
  8. Mirror / Crystal Mount 2 Products available
  9. Diode Pumped CW 1 Products available
  10. Accessories 1 Products available

Laser Crystal

China Laser Crystal, Laser Cube Engraving, Laser Etched Photo, Laser Photo Cube, we offered that you can trust.

Co2+:MgAl2O4 Laser Crystal For Passive Q Swtich

Co2+:MgAl2O4 Laser Crystal For Passive Q Swtich
Coupletech provides Co2+:MgAl2O4 Crystal is a relativelynew material for passive Q-Switching in lasers emitting from 1.2 to 1.6 um.In particular, for eye-safe1.54um Er:glass laser, but also works at 1.44um and 1.34um wavelengths. PassiveQ-Switching or saturable absorber, Co2+:MgAl2O4 Crystalcan cause high power laser pulse withoutusing electric-optic switching, also can compact the device. Coupletech also provides other material of Q-Switchs and all kinds of laser crystal and laser componenets.
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Ytterbium Doped Yttrium Aluminum Garnet (Yb:YAG Crystal)

Ytterbium Doped Yttrium Aluminum Garnet (Yb:YAG Crystal)
Yb:YAG(Ytterbium Doped YttriumAluminum Garne )crystal is one of the most promisinglaser-active materials and more suitable for diode-pumping then thetraditionalNd doped systems. It can be pumped at 0.94um laser output.Compared with the commonly used Nd:YAGcrystal. Yb:YAG(Ytterbium Doped YttriumAluminum Garne )crystal has a much larger absorption bandwidth to reducesthermal management requirements for diode lasers, a longer upper-statelifetime, three to four times lower thermal loading per unit pump power.Yb:YAG(Ytterbium Doped YttriumAluminum Garne )crystal is expected to replaceNd:YAG crystal for high power diode-pumped lasers and other potentialapplications. Yb:YAG shows great promise as a high power laser material. Several applications are being developed in the field of industrial lasers, such as metal cutting and welding. With high quality Yb:YAG now available, additional fields and applications are being explored. Coupletech provide the Advantages of Yb:YAG Crystal as below:Very low fractional heating less than 11%;Very high slope efficiency;Broad absorption bands, about 8nm@940nm;No exc ited-state absorption or up-conversion;Conveniently pumped by reliable InGaAs diodes at 940nm(or 970nm);High thermal conductivity and large mechanical strength;High optical quality. The Applications of Yb:YAG:With a wide pump band and excellent emission cross-section Yb:YAG is an ideal crystal.
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Erbium YAG Laser Crystal

Erbium YAG Laser Crystal
Er: YAG crysta laseris a kind of excellent 2.94 um laser crystal, widely used in laser medical system and other fields. Er: YAG crystal laser is the most important material of 3nm laser, and the slope with high efficiency, can work at room temperature laser, laser wavelength is within the scope of the human eye safety band, etc. 2.94 mm Er: YAG crysta laser has been widely used in medical field surgery, skin beauty, dental treatment. Coupletech porivde the advantages of Er:YAG crystals: High slope efficiency; Operate well at room temperature; Operate in a relatively eye-safe wavelength range. The parameter of Er:YAG as below: wavelength is 2940nm; melting point is 1965C; orientation is within 5 degree; density is 4.56g cm-3; parallelism is 10"; perpendicularity is 5; flatness is lambda10 at 632.8nm; suface quality is 105. For the Er:YAG, you can customise this product to your needs. If you do not find suitable specification for your application please contact us for custom solution. Coupletech also provide other laser crystals and the best service.
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Laser Crystal

Laser Crystal
Nd:Ce:YAGis an excellent laser material used for no-water cooling and miniature laser systems.The (Nd, Ce): YAG laser rod we produce has the characteristics of high efficiency( laser efficiency than Nd: YAG high about 30-50%), low threshold, anti-violet radiation and high repetition frequency for lasers operation. Nd:Ce:YAG has achieved the international advanced level .it is the most ideal laser material for the high repetition air cooling lasers. Nd:Ce:YAG suitable for different modes of operation (cw, pulsed , Q-switched, mode locked, doubling of frequency ) and high-average power lasers. Advantages of Nd:Ce:YAG as below:High efficiency;Low threshold;High optical quality;Good anti-UV irradiation property;Good thermal stability. You can customise the Nd:Ce:YAGto your needs.
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Ho,Cr,Tm:YAG (Yttrium Aluminium Garnet Laser Crystals)

Ho,Cr,Tm:YAG (Yttrium Aluminium Garnet Laser Crystals)
Ho, Cr, Tm:YAG-yttrium aluminium garnet laser crystals doped with chromium, thulium and holmium ions to provide lasing at 2.13 microns are finding more and more applications, especially in the medical industry.The inherent advantage of the crystal crystal is that it employs YAG as the host. YAG`s physical, thermal and optical properties are well known and understood by every laser designer. It has wide applications in surgery, dentistry, atmospheric testing, etc. Ho: Cr: Tm: YAG is a high efficient laser material which lasers at 2.1 m. It has wide applications in medical military and meteorology fields. The advantages of Ho:Cr:Tm:YAG as below:High slope efficiency;Pumped by flash lamp or diode;Operates well at room temperature;Operates in a relatively eye-safe wavelength range. Coupletech provide the parameter ofHo:Cr:Tm:YAG:Flatflat;Parallel anti-parallel wedged;Brewster angle;Concaveconvex radii;Cylinder grooved;Wavelength is2.080m;Melting Point is 1965;Orientation is;Parallelism is < 30";Perpendicularity is 5;Flatness is10; Surface Quality is 105. You can customise the Ho:Cr:Tm:YAG laser crystal to your needs. If you do not find suitable specifications for your application please contact us for custom solution. Coupletech also provide the other laser crystal and the best services.
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Neodymium Doped Yttrium Vanadate Laser Crystal

Neodymium Doped Yttrium Vanadate Laser Crystal
Nd:YVO4 ( Neodymium doped Yttrium Vanadate ) crystal is oneof the most promising commercially available diode pumped solid state lasermaterials, Nd:YVO4 combines with lower lasing threshold, higherslope efficiency, large stimulated emission cross-section, Optically uniaxialand large birefringence emit strongly-polarized laser, linearlypolarized light output, easytuning for single mode and high tolerance for pumping wavelength. Compared Nd:YAG lasercrystal, 5 times larger absorption coefficient in a broader band centered at807nm and favorable mechanical properties make Nd:YVO4 well suited for compact, efficient, high power diode-pumped lasers. The natural birefringence of Nd:YVO4 crystal gives riseto a highly polarized output at 1064nm, 1342nm and 914nm. Nd:YVO4 has widespread applications of laser systems, including machining, materialprocessing, spectroscopy, wafer inspection, light displays, medicaldiagnostics, laser printing, etc. Nd:YVO4 is suitable for laserdiode pumping among the current commercial laser crystals, especially for lowto middle laser power density. Pumped by laser diodes, Nd:YVO4 crystal has been incorporated with high NLO coefficient crystals (LBO, BBO, orKTP) to frequency-shift the output from the near infrared to green, blue, oreven UV.
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Laser Crystal

Laser Crystal
Neodymium doped Potassium-Gadolinium Tungstate crystals (Nd:KGd(WO4)2 or Nd:KGW) is an excellent laser gain material which has low laser oscillations threshold and higher emission section. The fluorescent concentration quench effect of the Nd3+ ion in the KGW crystal may be weakened due to the W-O covalent bond, Nd:KGD crystal has a higher doping concentration of active ion. Furthermore, the absorption band at 808nm of Nd3+ in the KGW which has 12nm FWHM is well matched with the emission wavelength of current commercial laser diode. Specifications of Nd:KGW: orientation: standard dopant concentration (at .%) : 3, 5, 8 maximum length: 50mm length tolerance (mm) :+1.0-0.0 diameter tolerance (mm) : +-0.0 parallelism:
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Diffusion Bonded Composite Laser Crystal

Diffusion Bonded Composite Laser Crystal
Coupletech also provides a various of diffusion bonded Composite laser crystal, such as Nd:YVO4 + YVO4, YVO4 + Nd:YVO4 + YVO4, Nd:YAG + Cr:YAG, Yb:YAG +Cr:YAG, Nd:YAG + YAG crystal, etc. Diffusion-bonded Crystal technology is to make two orthree pieces of laser crystal with the same crystal substrate close together toform the optical cement at room temperature after a series of treatment, andthen heat-treated crystal to form a permanent bonded without the case of otherbinders, and thermal lens effect can be reduced by diffusion-boundedtechnology. Diffusion Bonded Crystals (composite laser rods) consist of one laser crystal and one or two undoped material. They`re combined by optical contact method and further bonded under high temperature. Diffusion Bonded Crystals can effectively decrease thermal lensing effect considerably, therefore it`s very suitable for high power laser applications.
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Neodymium-doped Yttrium Lithium Fluoride Laser Crystal

Neodymium-doped Yttrium Lithium Fluoride Laser Crystal
Nd:YLF (Nd: LiY1.0-XF4 )crystal offers an alternative to the more common YAG host for near IRoperation. The combination of weak thermal lensing (19 times lower than that ofYAG), large fluorescence line width and naturally polarized oscillation makesNd:YLF an excellent material for CW mode locked operation. 1053 nm output ofNd:YLF matches gain curves of Nd:Glass laser and performs well as an oscillatorand pre-amplifier, the output wavelength covers 1053nm, 1047nm, 1313nm, 1324nm and 1370 nm.CoupletechCo., Ltd. manufactures, develops and markets a variety of optical crystals andcomponents which are widely used in the field of optoelectronics. Nd:YLF crystal is grownutilizing the modified Czochralsky technique. The as-grown crystals are thenprocessed into laser rodsorslabs, coated in house, and inspectedper customer specifications. Long crystals for lamp pumping with concentrationto 1.1 atom % and short elements for diode pumping with concentration to 1.5atom % can be grown.The use of high quality starting materials for crystal growth, whole boule interferometry, and precise inspection of scattering particle in crystal using He-Ne lsaer assures that each crystal will perform well.
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Bonding Laser Crystal

Bonding Laser Crystal
Coupletech provides YVO4+Nd:YVO4_YVO4 Bonding (Diffusion bonded) Crystals consist of one laser crystal and one or two undoped material. The YVO4+Nd:YVO4_YVO4Bonding (Diffusion bonded) Crystalsare combined by optical contact method and further bonded under high temperature. The YVO4+Nd:YVO4+YVO4Bonding (Diffusion bonded) Crystal helps to decrease thermal lens effect considerably. Coupletech can supply three kinds of Diffusion Bonded Crystals: YVO4+Nd:YVO4+YVO4, YAG+ Nd:YAG+YAG, Cr:YAG+Nd:YAG Coupletech also provides other kinds of Bonding (Diffusion bonded) Crystals and all kinds of laser crystal and laser components.
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Undoped YAG Laser Crystal

Undoped YAG Laser Crystal
Undoped YAGCrystal is an excellent material for UV-IR optical windows, particularly for high temperature and high energy density application. The mechanical and chemical stability is comparable to sapphire crystal, but YAG is unique with non-birefringence and available with higher optical homogeneity and surface quality. Up to 3" YAG boule grown by CZ method, as-cut blocks, windows and mirrors are available. Advantages of Undoped YAG:High thermal conductivity, 10 times better than glasses;Extremely hard and durable;Non-birefringence;Stable mechanical and chemical properties;High bulk damage threshold;High index of refraction, facilitating low aberration lens design. Features of Undoped YAG:Transmission in 0.25-5.0mm, no absorption in 2-3mm;High thermal conductivity;High index of refraction and Non-birefringence. Basic properties of Undoped YAG: Density4.5gcm3;Transmission Range250-5000nm;Melting Point1970C;Specific Heat0.59 W.sgK;Thermal Conductivity14 WmK;Thermal Shock Resistance790 Wm;Thermal Expansion6.9x10-6K;dndt, at 633nm7.3x10-6K-1;Mohs Hardness 8.5;Refractive Index1.8245 at 0.8mm, 1.8197 at 1.0mm, 1.8121 at 1.4mm. You can customise U to your nndoped YAG needs. If you do not find suitable specifications for your application.
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Yttrium Scandium Gallium Garnet

Yttrium Scandium Gallium Garnet
Cr:Er:YSGG (Erbium, Chromium doped Yttrium Scandium Gallium Garnet) provides an efficient laser crystal for generating 2800nm light in an important water absorption band. Cr:Er:YSGG laser crystal becomes one of the most promising laser crystals recently owing to its high conversion efficiency, stable chemical properties, long fluorescent lifetime. Now Cr:Er:YSGG is widely used in dentistry, environ ental researching, optical communication, remote sensing technology and military etc. Advantages of Cr:Er:YSGG: Lowest threshold and highest slope efficiency of common Erbium doped crystals;High conversion efficiency;Operates CW, free-running or Q-switched;High optical quality;The intrinsic crystal disorder increases pump line widths and tenability;Can be flash lamp pumped via Cr bands or diode pumped via Er bands;Long fluorescent lifetime. You can customise Cr:Er:YSGG laser crystal to your needs. If you do not find suitable specifications for your application please contact us for custom solution. Coupletech also provide other laser crystals and the best service to you.
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Cr-doped Colquiriite (Cr:LiSAF) Laser Crystal

Cr-doped Colquiriite (Cr:LiSAF) Laser Crystal
Coupletech provides high quality, Cr-doped Colquiriite crystal (Cr:LiSAF) usingthe Czochralski technique. Cr:LiSAF crystal is excellent laser material with high energy storage and high slope efficiency. Cr:LiSAF is also ideal working material under conditions of ultra short pulse and ultra high power. Currently, Cr:LiSAF related products such as flashlight pumping and diode pumping laser have been widely used. The Sellmeier equations ( in m) of Cr:LiSAF : nc2=1.98448+0.00235(-0.010936)-0.01057 na2=1.97673+0.00309(-0.00935)-0.00828 Specifications of Cr:LiSAF: Size: Rod sizes from 2mm to 16mm in diameter and from 1mm to 180mm in length;Cr dopant concentrations:0.51.0 mol%;Parallelism:
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Aluminium Garnet Laser Crystal

Aluminium Garnet Laser Crystal
Coupletech Co., Ltd supplies Neodymium-doped Yttrium Aluminium Garnet ( Nd:YAG ) crystal using the Czochralski technique for use in industrial, medical, military and scientific applications. Coupletech manufactures various finished laser rods with different sizes, slabs and wafers as well as supplying Nd:YAG blank or materials. Although Nd:YAG was invented in the Sixties last century, it has been and is still the most commonly used solid-state crystal material. Nd:YAG crystals are wildly used in all types of solid-state lasers systems, frequency-doubled continuous wave, high-energy Q-switched, and so forth. Its good fluorescent lifetime thermal conductivity and physical strengths makes it suitable for high power lamp pumped laser Dimension: size up to dia.10x185mm and maximum diameter of dia.40mmx2mm Nd Dopant Level: 0.32.0(0.1)atm% Diameter tolerance: 0.05mm Length tolerance: 0.5mm Perpendicularity: < 5 arc minutes Parallelism: 99.8%@1064nm and R
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