NakuLaser Blog

Why the erbium-doped fiber amplifier has the largest gain at 1531nm？ The energy difference between the metastable state and the ground state of the rare earth element Er(3+) doped in the fiber is equivalent to the energy of the photon of 1550 nm. When the pump light energy (980 nm or 1480 nm) of the appropriate wavelength is absorbed, the electrons will transition from the ground state. To the higher energy level of the excited state. Then, a small amount of energy is released and transferred to a more stable metastable state. When the pumping source is sufficient, the electrons of the erbium ion are reversed, that is, the metastable state of the high energy level is larger than the number of ground state electrons having a lower energy level. When the appropriate light signal passes, the metastable electrons will have a stimulated radiation effect, emitting a large number of photons of the same wavelength, but because of the vibrational energy level, the wavelength is not a si

This semiconductor laser is from CivilLaser, it’s a infrared laser system, the wavelength is 980nm, the max output power is 10000mW , and it can be adjusted. It’s a high power invisible laser. It has three working mode: CW, TTL/Analog modulation. Let's check it now.

This semiconductor laser is from CivilLaser, it's a green laser system, the wavelength is 520nm,  output power is 12000mW , it's a 2018 new kind of high power green laser. Let's check it now.

This video is from CivilLaser, it's a infrared near invisible laser system , the wavelength is 808nm, output power is 20W . Let's check it now.

450nm 3W~8W high power semiconductor laser with adjustable power supply [Specifications] Product Name: 450nm Semiconductor laser Output Wavelength: 450nm ± 5 nm Spatial mode: Near TEM00 Output Power: 3W~8W (choose) Operating mode: CW or Modulation Beam Size: 4mmx2mm Beam Divergence Angle:  <3x0.5 mrad High light: <25mm Power Stability:  <3% per 4 hrs Temperature Stabilizing: TEC Warm Up Time: <1minute MTTF(mean time to failure): 10,000 hrs Laser head dimensions: 155(L)x77(W)x60(H)mm3 Modulation:  0~30khz Analog or TTL Power Supply: Standard type power supply / Lab Adjustable power supply (Choose) Warranty: 1 Year

This video is from CivilLaser, it's a Erbium-doped Fiber Amplifier, and it's the Booster - Amplifier, The maximum output power is 33dBm. High power erbium doped fiber amplifier (EYDFA-HP-BA)，based on amplification technology of double clad erbium doped fiber， unique optical packaging technology,  and with reliable hardware light path protection design, realized high power laser output in C band or L band， It has the advantages of high gain and low noise, and can be widely used in CATV, optical fiber communication, laser radar, etc.. Parameters Units Minimum value Typical value Maximum value Remarks Wavelength range nm 1540 1550 1565 C-band Input power dBm -6 3 Output power dBm  10 30、33 Noise index dB 6.0 Polarization dependent gain dB 0.5 Input / output isolation dB 40 Operating temperature range °C -20 +65 Working humidity range % 70 Pigtail c

Ranking source: http://m.10brandchina.com/vote/startin.php?id=51551?xcpyx Among them, the research institutes and universities in Europe, America, Japan and other developed countries are most familiar with the old laser company CNI and the cost-effective Naku. CNI: http://www.cnilaser.com/C-home.htm Naku: http://www.civillaser.com/  

This semiconductor laser is from CivilLaser, it's a blue laser system , the wavelength is 488nm,  and output power is 30mW, Its power is very stable, it is a laboratory laser source. Let's check it now. Output Wavelength: 488 ±5 nm Working Current: 1.20~2.0 A Operating mode: CW or Modulation Spatial mode: TEM00 Residual infrared(1064,808,946nm etc): <0.01% Linewidth: <0.1 nm Pointing Stability: <0.05 mrad Divergence Angle: <3x0.5mrad Bean Height: 25mm Beam Size: 2x4 mm Beam Diameter: 2 mm Beam Divergence:  0.5 mrad Power Stability:  <±5% per 2 hrs Temperature Stabilizing: TEC

This module is from CivilLaser, it's a 532nm green laser module with thick laser beam. This module has  CW working mode and TTL modulation . Let's check it now.  

This video is from CivilLaser, it's a red fiber coupled laser , the wavelength is 635nm, the output power is 12W, this semiconductor laser coupled with a optical fiber. Let's check it now.    

This video is from CivilLaser, it's a yellow fiber coupled laser , the wavelength is 589nm,  the output power is 1W. This DPSS laser coupled with a FC/PC optical fiber. Let's check it now Fiber Core Diameter: 105μm /200μm /400μm /600μm /800μm /1000μm(Choose) Fiber Length：1m/2m/3m (Choose) Interface type: FC/PC, SMA905, FC/APC (Choose)

1532nm 3W semiconductor laser with power supply CW modulation together [Features] Miniature size Collimated straight beam Easy use & maintenance free Longlife operation High efficiency High reliability [Specifications] Product Name: 1532nm IR Laser Spatial Mode: Multimode Lead Time: 1~3 weeks! Custom product available! Output Wavelength: 1532±1nm Output Power: 3000mW Operation Mode: CW or Modulation Polarization: 10:0.1 Pointing stability: <0.05 mrad Beam Size: 6mm Beam Height: 25mm Power stability: <±3% per 2 hrs Temperature Stabilizing: TEC Beam quality(M2): <2 Warm Up Time: <5 minutes MTTF(mean time to failure): 10,000 hrs Optimum Operating Temperature: 20~30℃ Storage Temperature: 10~50℃ Modulation:  0~10khz Power Supply: Standard type power supply / Lab Adjustable power supply (Choose) Warranty: 1 Year Note: The picture is for reference only, different out power lasers, with different laser sizes. If customer is concerned about the laser size, please contac

785nm/792nm 5W~8W Near IR laser high power Invisible Semiconductor laser [Specifications] Product Name: IR Semiconductor Laser Lead Time: 1~3 weeks, Custom product available! Output Wavelength: 785nm/792nm Output Power: 5W~8W(choose) -- 5W 785nm / 8W 792nm Spot mode: multimode Operating mode: CW or Modulation Prejudiced way: 10:1 Pointing Stability: <0.05 mrad Beam diameter: 6mm Beam Divergence Angle:  2.5 mrad Power stability: <±3% per 2 hrs Bean Height: 25mm Temperature Stabilizing: TEC Warm Up Time: <5 minutes Beam quality(M2): <2 Optimum Operating Temperature: 20~30℃ Storage Temperature: 10~50℃ MTTF(mean time to failure): 10,000 hrs Laser dimensions: 100(L)x40(W)x50(H) mm Power Supply: Standard type power supply / Lab Adjustable power supply (Choose) Modulation:  0~30khz Analog or TTL

460nm 1000mw Blue Semiconductor Laser From CivilLaser [Specifications] Product Name: 460nm 1W  Blue Laser Output Wavelength: 460(+/-5) nm Output Power: 1000mW Transverse Mode: Multi Mode Operating mode: CW or Modulation Aperture position: 29mm Beam Diameter at Aperture: 4mm x 2mm Beam Divergence(Full angle): 1*0.4mrad Temperature Stabilizing:  TEC Power Stability: <3% per 4 hrs Warm-Up time: < 1 minute Expected Lifetime: 10000 hours Laser Head Dimensions: 114(L)x44(W)x65(H)mm3 Power Driver: Standard type power supply / Lab Adjustable power supply (Choose) Modulating: 0~30khz Analog or TTL This video is from CivilLaser, it's a blue semiconductor laser , the wavelength is 460nm, the max output power is 1W, and the output power can be adjustable from 0 to max 1000mW. Let's check it now.  

532nm 10W Fiber Coupled Laser High Power Green DPSS Laser [Specifications] Product Name: 532nm Fiber coupled laser Output Wavelength: 532(+/-1) nm Output Power: 10W Operating mode: CW or Modulation Spatial mode: TEM00 Fiber diameter: 100um 200um Power stability: <3% per 4 hrs Temperature Stabilizing: TEC Warm Up Time: <5 minutes MTTF(mean time to failure): 10,000 hrs Laser dimensions: 155(L)x77(W)x60(H) mm Power Supply: Standard type power supply / Lab Adjustable power supply (Choose) Modulation:  0~30khz Analog or TTL Fiber Core Diameter: 105μm/200μm/400μm/600μm/800μm/1000μm(Choose) Fiber Length：1m/1.5m/2m/2.5m/3m Interface type: FC/PC / SMA905 / FC/APC (choose)

This laser is from CivilLaser, it’s a  fiber coupled laser , the wavelength is 655nm, the max output power is 2W, this  Semiconductor laser  coupled a 400μm fiber. Let’s check it now.

this video is from  CivilLaser , it’s a 2.5W  Small Laser Marking Machine .  Below is a complete demonstration of the installation operation. Let’s check it now. Reference Table: Laser Power Engraveable Materials 2.5W 1.5mm thick cork, 0.8mm thick hardwood, glass, Aluminum anodized layer, Electronic chip, paint, ivory, PCB coating, paper, bamboo, rubber, plastic, leather, horns, acrylic, etc. 6W 2.5mm thick cork, Electronic chip, paint, ivory, PCB coating, paper, bamboo, rubber, plastic, leather, horns, acrylic, jade, ceramics, etc. 10W 3.5mm thick cork, 2mm thick hardwood, Electronic chip, paint, ivory, PCB coating, paper, bamboo, rubber, plastic, leather, horns, acrylic, iron, stainless steel, etc.

This video is from  CivilLaser , it’s a blue-violet laser , the wavelength is  405nm , and the output power can be adjustable from 0 to max 4000mW. This laser has three mode: CW / TTL/ Analog, in this video, we choose CW mode. 4W is very  high power  for 405nm blue-violet laser, the bottom is equipped with a cooling rack. Operating mode: CW or Modulation Modulation:  0~30khz Analog or TTL Bean Height: 29mm Beam Size: 4mmx2mm Beam Divergence(Full Angle):  1×0.4 mrad Power Stability:  <3% per 4 hrs Warm Up Time: <1 minutes

980nm 10W~45W High power Fiber coupled laser with power supply [Specifications] Product Name: 980nm 10W~45W Fiber coupled laser Lead Time: 7~15 workingdays! Custom product available! Output Wavelength: 980(+/-5) nm Output Power: 10W~45W (Choose) Optical fiber core diameter: 400um(Default) -- (100um/200um/400um/600um/800um/1000um -- Can be customized) Spatial mode: TEM00 Operating mode: CW or Modulation Power stability: <3% per 4 hrs Temperature Stabilizing: TEC Warm Up Time: <1 minutes MTTF(mean time to failure): 10,000 hrs Power Supply:  Standard type power supply  /  Lab Adjustable power supply  (Choose)  Modulation:  0~30khz Analog or TTL Interface type:  FC/PC  (default), FC/APC, SMA905 (If you need FC/APC or SMA905 interface please leave a comment when you place the order.)

780nnm 1500mw 2000mw IR laser pointer Protable laser   【Feature】 Products using high performance T7075 aluminum base, high-end pumping source and crystal accessories production in clean workshop, all the materials and products are subjected to rigorous testing, to ensure high performance and service life of the product.   【SPECIFICATIONS】 Name: 780nm IR Portable Laser Pointer Wavelength: 780nm Output Power: 1500mw/2000mw (choose) Class: ClassⅣ -- High output power laser beam, Safety glasses is necessary! Output Mode: Continuous Wave CW Product Color: Black Body material: T7075 Aircraft-Grade Aluminum Size: 234.5mm（L）*36mm（∮） Weight: About 300g Beam Divergence: <2mrad Beam Diameter: 6.0 mm Operating Temp. Range: 0~40°C Storage Temp. Range: -10~70°C Working Voltage: DC=3-5V Power supply: 1 x 18650 Li-ion Recharged Battery (Not Include) Battery Lifetime: 120 mins Expected lifetime: More than 5,000 hours Project distance: <1000 meters

Diameter 40mm 650nm 100mW Red   Parallel Light Laser  Support customization This laser has the characteristics of small beam divergence angle, high parallelism, full circle spot and uniform brightness.  --  CivilLaser.com

850nm 1200mW Laser Module Dot Line Crosshair Infrared Diode Laser [Feature] 1. 850nm is near-infrared light, strong concealing, good anti-interference ability 2. Spot size adjustable from 3 mm to several centimeters 3. Line / cross lens angle from 5° to 120° optional 4. Good heat dissipation, shockproof, anti falling and antistatic 5. High stability 6. High temperature resistance and corrosion resistance [Specification] Product Name: 850nm Laser Module Wavelength: 850nm Output Power: 1200mW Laser Shape: Dot / line / crosshair (choose) Operating Voltage: DC9-25V Operating Current: ≤1000mA Size: 22*110 mm Include: Laser module + power supply + laser holder  

785nm 350mW  Raman Laser Near Ir Fiber Coupled Laser The 785nm narrow-linewidth Raman laser produced by our company has narrow spectral line width and good spectral stability, and it has a wide range of applications in Raman analysis. Provides free optical path and fiber-coupled two kinds of production solutions, which can be matched with Raman probes and corresponding accessories, to fully solve the customer's need to build a hardware part of the Raman spectrometer. The Raman laser has good spectral stability, and the center wavelength remains basically constant under long-term working conditions; the spectral line width is narrow, and it has a very good Raman effect when used as a Raman light source, and is very suitable for pulling. Mann Spectral and Sensing applications. [Specifications] Wavelength: 785nm Output Power: 350mW Fiber interface: FC/PC or SMA-905(Default: FC/PC) Fiber diameter:100um,200um,400um(Default:400um) Fiber type: Multi-mode Fiber Output stability (

Plus version long 3000mW Blue Laser Pointer Burning Laser For Sale This high quality blue laser pointer will impress your coworkers, family and friends. Use it for your next presentation and everybody will know that you are ahead of the latest technology. [Features] 1. Ingenious appearance design, which completely differs from traditional laser flashlight; 2. Core accessories have strong power like other Ultra powerful blue laser pointer; 3. Complimentary accessories: protective glass, , charger, advanced aluminum case and the laser head with five kinds of patterns; [Specifications] Name: 3W Blue Laser Pointer  Wavelength: 445nm Output Power: 3W Class: Class IV Output Mode: Continuous Wave Laser Sharpe: Dot Product Color: Black Body Material: Aircraft-Grade Aluminum Project Distance: >5000 meters away (less in daylight) Warm-up Time: <1 second Power Supply: 2 x 18650 Li-ion Recharged Battery (Not Include) [Packing List] 1x Manual 1x Charger 1x Box 1x Laser Flashlight 1x L

Fiber Collimator Diameter 10mm Fiber Optic Focusing Lens SMA905 Fiber This product can be used for fiber collimation or for coupling focusing. The use of collimation, either single mode or multimode fiber can be used. If used as a coupling focus, it can only be used with multimode fiber (numerical aperture 0.22~0.37NA, core diameter ≧100μm). [Features] 1. This collimator is used for SMA905 connector fiber, which can be easily adjusted to focus. It is easy to use, universal, compatible with other optical devices, and uses wavelengths from 200nm to 2500nm. 2. The 10mm lens is focused, and after the beam passes through the lens, the divergence angle does not exceed 2°. [Specifications] Product Name:  Fiber Collimator Model: 75-UV Connector: SMA905 Outer Diameter: 16mm Lens Diameter: 10 mm Lens Focal Length: 15 mm Wavelength Range: 200~2500 nm Operating Temperature: -20~150°C Housing Material: Aluminum, black

505nm 300mW 600mW Solid State Lase r Green Laser Beam [Features] Miniature size Collimated straight beam Easy use & maintenance free Longlife operation High efficiency High reliability [Application] Thermal printing Material Inspection Scanning Biochemistry Lidar [Specifications] Product Name: 505nm Solid State Laser Wavelength: 505nm Speckle Pattern: TEM00 Output power: 300mW / 600mW (Choose) Way to Work: CW or modulation Polarization Mode: Linear Flare Shape: Circular, aspect ratio<1.1:1 Directional Stability: <0.05mrad Straight Beam(1/e2): 2.5mm The Beam divergence Angle: 1.2mrad Stability of the power: <±3% over 4 hrs Cooling Way: TEC Warm up time: <5 minutes Beam Quality(M2): <1.2 The best Working Temperature: 20*30°C Storage Temperature: 10~50℃ Service life: 10,000 hrs Laser Head size: 100(L) x 34(W) x 45(H)

488nm 50mW~80mW Semiconductor Laser  Blue Laser Beam With Power Supply [Features] Miniature size Collimated straight beam Easy use & maintenance free Longlife operation High efficiency High reliability [Applications] Thermal printing Material Inspection Scanning Biochemistry Lidar   [Specifications] Product Name: 488nm Semiconductor Laser Product Include: Laser system + Controller + Power source Laser Shape: Circular, aspect ratio<1.1:1 Lead Time: 1~3 weeks,  Custom product available! Output Wavelength: 488±5 nm Output Power: 50mW~80mW (Choose) Working Current: 1.20~2.0 A Operating mode: CW or Modulation Spatial mode: TEM00 Residual infrared(1064,808,946nm etc): <0.01% Linewidth: <0.1 nm Pointing Stability: <0.05 mrad Divergence Angle: <3x0.5mrad Bean Height: 25mm Beam Size: 2x4 mm Beam Diameter: 2 mm Beam Divergence:  0.5 mrad Power Stability:  <±5% per 2 hrs Temperature Stabilizing: TEC Warm Up Time: <5 minutes MTTF(mean time to failure): 10,000 hrs

SHARP 505nm 35mW Green Laser Diode Small Divergence Angle Laser Diode [Features] 1. Small divergence angle 2. Stable performance [Specifications] Product Name: 505nm green laser diode Country of Origin: Japan Output Power: CW 35mW Operating Current: Max 100mA Operating Voltage: Max 7.5V Package Type: T018(5.6mm) Working Temperature: -10~+60°C Storage Temperature: -40°C~+85°C Welding Time: less than 10 seconds Welding Temperature: less than 260°C Working Life: less than 10,000 hours  

520nm 20mW Fiber Coupled Laser Green Laser Beam [Specifications] Product Name: 520nm Fiber Coupled Laser  Lead Time: 1~3 weeks,Custom product available! Output Wavelength: 520(+/-5) nm Output Power: 20mW Operating Mode: CW or Modulation Spatial Mode: Multi Mode Power Stability: <3% per 4 hrs Temperature Stabilizing: TEC Warm Up Time: <5 minutes MTTF(mean time to failure): 10,000 hrs Laser Dimensions: 114(L)x44(W)x65(H) mm/145L)x64(W)x70(H) mm Power Supply: Standard type power supply / Lab Adjustable power supply (Choose) Modulation:  0~30khz Analog or TTL Fiber Core Diameter: 50μm/105μm/200μm/400μm/600μm/800μm/1000μm(Choose) Fiber Length：1m/1.5m/2m/2.5m/3m Interface type: FC/PC / SMA905 / FC/APC (choose) Note: The fiber core diameter,length and interface type can be customizable, please leave a comment when you place the order. [Package include] 1 x 520nm Fiber coupled  Laser 1 x Laser power supply

Hot sales! 405/450/488/505/520/638nm Blue/Green/Red laser pointer DS6 [Specifications] Wavelength: 405/450/488/505/520/638nm Output Power: 60-700mW Security Level: Class 3B, Class Ⅳ Size：135.2*32mm Shell Material: Aviation aluminum Color:Fine sand Dumb black Switch mode: self lock, turn off or light touch shift Circuit Control: constant current drive Circuit Efficiency: Step-up conversion efficiency of 93% Laser Modes: Always bright and dazzling light Spot Form: Dot Laser Beam Style: Continuous linear Spot Size: about at 5m<φ15-18mm Focusing Method: Focusing (Rotate the threaded front cover) Diving Level: 5m diving Battery Type: 1*18650 rechargeable battery (Not included) Battery Direction: the positive direction of the light, the negative tail hair switch Operating Current: Depending on the power and wavelength, max 3.7V @ 1A Battery direction: negative direction to light direction, positive to tail switch. Operating Voltage: DC = 3.7V Starting Voltage: DC = 2.5V Operating Tem