450nm Blue Lasers

450nm Blue Lasers

Keywords: blue lasers, 450nm, 445nm, blue fiber laser
Mar 30, 2021 View: 1655 Data Sheet

Blue laser has superior efficiency. Physics dictates the efficiency of energy absorption. Compared to industry-standard IR wavelength, blue absorption is maximum 66x better and blue laser enable process speed gains of 2-10x.

1. STN Series Blue Lasers

1.1 STN Series Fiber Coupled Blue Lasers

High brightness, fiber delivered blue lasers for metals processing

The STN Series Fiber Coupled Blue Lasers are high brightness blue lasers that process metals better and more efficiently than IR or green lasers and integrate with standard scanning systems. This enables them to service a wide range of welding, additive manufacturing, and other materials processing applications in batteries, e-mobility and consumer electronics. This series combined with scan head delivery, offers an ideal laser for metal processing due to the high absorption of blue light by metals: including 13x for copper and 3x for aluminum. Reducing the excess heat input compared to infrared lasers enables spatter-free and defect free welds with the highest possible mechanical and electrical performance. With available output powers from 125W to 1kW, these blue lasers can power mass production solutions for <1mm copper and aluminum welds which require a large process window and demand extremely high yields.

Key Benefits

  • High quality low to spatter-free welding
  • Dramatically improves process performance and process window
  • Enables welding processes not possible or with low yields with IR

Application

  • Batteries and energy storage
  • E-mobility
  • Consumer electronics
  • Interconnects
  • Electronics packaging
  • 3D metal printing (powder bed fusion and wire feed)

Optical Units STN-125-F STN-250-F STN-500-F STN-1000-F
Wavelength nm ~444 ~444 ~444 ~444
Bandwidth nm ±15 ±15 ±15 ±15
Output Power W 125 250 500 1000
Power Adjustment % 20-100 20-100 20-100 20-100
Power Stability (8 hours) % ±1.5 at full power
Fiber Diameter (Core) micron 100 100 200 200
Fiber Numerical Aperture N/A 0.22 0.22 0.22 0.22
Beam Parameter Product
(10-90% enclosed power)
mm.mrad 5 5 15 15
Standard Fiber Length
(Connector Type)
m 5 (QBH). Options for 10 and (QD)
Electrical
Operating Current A <18 <18 <8 per phase <8 per phase
Operating Voltage V 180/264 (47-63Hz) 1ph 3 wires 208-240 (50/16Hz, 3ph 4 wires)
External Control Inputs
Laser Enable (High on)
CW Analog Control
Modulation
Communications

V
V
kHz

+5/+24
0-10
5
Ethernet

+5/+24
0-10
5
Ethernet

+5/+24
0-10
5
Ethernet

+5/+24
0-10
5
Ethernet
Safety Interlocks
Interlock Voltage (Laser Enable)
Open Circuit (Laser Shut-down)

V

V

24

0

24

0

24

0

24

0
Mechanical Driver (19" Rack) Driver (Stand Alone)
Height, Width, Depth mm 178 × 443 × 635 641 × 671 × 1183
Weight kg 21 21 ~160 ~180
IP Rating IP20/NEMA 1 IP52/NEMA 12
Operating Conditions
Temperature Deg C 15-25 15-25 15-25 15-25
Relative Humidity
(non-condensing)
% 0-90 0-90 0-90 0-90
Storage and Transport
Temperature Deg C 0-40 0-40 0-40 0-40
Cooling
Heat Load kW/Rton 3/0.85 3/0.85 4/1.2 8/2.3
Min Flow Rate Lpm/gpm 6/1.5 6/1.5 16.5/4.3 33/8.6
Supply Temperature Deg C 15-25 15-25 20-24 20-24
Max Pressure bar/psi 5.5/80 5.5/80 5.5/80 5.5/80

1.2 STN Series Free Space Blue Lasers

High brightness, free space output blue lasers for metals processing

The STN Series Free Space Blue Lasers are high brightness, blue lasers that process metals better and more efficiently than IR or green lasers and integrate with standard scanning systems. This enables them to service a wide range of welding, additive manufacturing, and other materials processing applications in batteries, e-mobility and consumer electronics. The high brightness of this series, combined with scan head delivery, offers an ideal laser for metal processing due to the high absorption of blue light by metals: including 13x for copper and 3x for aluminum. Reducing the excess heat input compared to infrared lasers enables spatter-free and defect free welds with the highest possible mechanical and electrical performance. With available output powers from 125W to 250W, these blue lasers can power mass production solutions for <500micron copper and aluminum welds which require a large process window and demand extremely high yields.

Key Benefits

  • Compact footprint to simplify integration
  • Capable of direct interface to standard scanners
  • All semiconductor laser reliability and lifetime
  • Lower cost of ownership than fiber and solid-state lasers
  • Spatter and defect free conduction mode welds
  • Higher weld joint densification

Application

  • Batteries for consumer electronics
  • Consumer electronics
  • Interconnects
  • Electronics packaging
  • Powder bed fusion 3D metal printing

Optical Units STN-125 STN-250
Wavelength nm ~444 ~444
Bandwidth nm ±15 ±15
Output Power W 125 250
Power Adjustment % 20-100 20-100
Power Stability (8 hours) % ±1.5 at full power
Collimator Aperture Diameter micron 20 or 30 20 or 30
Beam Parameter Product
(10-90% enclosed power)
mm.mrad <5 <5
Electrical
Operating Current A <18 <18
Operating Voltage V 180/264 (47-63Hz) 1ph-3 wires
External Control Inputs
Laser Enable (High on)
CW Analog Control
Modulation
Communications

V
V
kHz

+5/+24
0-10
5
Ethernet

+5/+24
0-10
5
Ethernet
Safety Interlocks
Interlock Voltage (Laser Enable)
Open Circuit (Laser Shut-down)

V

V

24

0

24

0
Mechanical Driver/Head with telescope
Height, Width, Depth mm H: 178/170 - W:443/100 - D: 635/410
Weight kg 21 11.4
Power Supply 19” Rack
IP Rating IP20/NEMA 1
Operating Conditions
Temperature Deg C 15-25 15-25
Relative Humidity
(non-condensing)
% 0-90 0-90
Storage and Transport
Temperature Deg C 0-40 0-40
Cooling
Heat Load kW/Rton 3/0.85 3/0.85
Min Flow Rate Lpm/gpm 6/1.5 6/1.5
Supply Temperature Deg C 15-25 15-25
Max Pressure bar/psi 5.5/80 5.5/80

STK Series Blue Diode Lasers

1. 500W-2000W Blue Diode Lasers

Compared with traditional laser products, our blue diode laser has a higher absorption rate for materials such as copper and aluminium, and can process non-ferrous metals with lower power. Our blue laser is more compact and easier to use. With flexible laser output mode, it can be integrated into the processing system conveniently.

Our blue lasers can be used in wide applications like welding, cladding, surface treatment, lithium-ion battery manufacturing, etc. Our professional laser application team, with good knowledge and experience, provides the best laser system solution for our customers all around the world.

Features:

  • Good beam quality
  • High electro-optical conversion efficiency
  • Excellent power stability
  • Two operation modes: CW and modulation
  • Excellent system reliability
  • Max modulation frequency up to 5kHz
  • Easy-to-use control interface
  • Cost effective and maintenance free

Application:

  • Welding
  • Additive manufacturing
  • Surface treatment
  • Lithium-ion battery manufacturing
Part number STK-450-500-330 STK-450-1000-400 STK-450-1500-400 STK-450-2000-600
Power 500W 1000W 1500W 2000W
Wavelength 450±5 nm 450±5 nm 450±5 nm 450±5 nm
Output Fiber Core Diameter 330μm 400μm 400μm 600μm
Output Cable Length 10m or Customized 10m or Customized 10m or Customized 5m or Customized
Output Cable Connector QBH QBH QBH QBH
Aiming Beam Red Red Red Red
Operation Mode CW or modulation CW or modulation CW or modulation CW or modulation
Polarization Random Random Random Random
Power Stability (25>℃) <±1.5% (2h) <±1.5% (2h) <±1.5% (2h) <±1.5% (2h)
Power Adjustment Scope 10%-100% 10%-100% 10%-100% 10%-100%
Max Modulation Frequency 5kHz 5kHz 5kHz 5kHz
Physical Size (H×W×D) 798×420×900mm 798×420×900mm 798×420×900mm 800×750×1200mm
Weight < 130 kg < 140 kg < 140 kg < 140 kg
Power Supply Three Phase, 380±20 V, AC, PE, 50/60 Hz Three Phase, 380±20 V, AC, PE, 50/60 Hz Three Phase, 380±20 V, AC, PE, 50/60 Hz Three Phase, 380±20 V, AC, PE, 50/60 Hz
Power Consumption 3.5kW 7.0kW 9.0kW 10.0 kW
Control Interface RS232/AD RS232/AD RS232/AD RS232/AD
Minimum Water-Cooling Capacity 3.0kW 6.0kW 8.0kW 8.0 kW
Temperature Settings 25>℃ (Laser Module), 30>℃ (QBH) 25>℃ (Laser Module), 30>℃ (QBH) 25>℃ (Laser Module), 30>℃ (QBH) 25>℃ (Laser Module), 30>℃ (QBH)
Cooling Tubes Size I.D. Φ25mm I.D. Φ25mm I.D. Φ25mm I.D. Φ32mm
Cooling Water Flow Rate (Laser Module) >20L/min >25L/min >25L/min >50L/min
Cooling Water Flow Rate (QBH) 1.5~2.0L/min 1.5~2.0L/min 2.0L/min 1.5~2.0L/min

Note: The back reflection will affect the performance and life of the direct diode laser. It is necessary to use the output laser when it is 8-10° away from the vertical direction of the surface.

2. 100W~200W Blue Diode Lasers

2.1 200W Blue Diode Lasers

Features:

  • 445nm wavelength
  • 100W/150W/200W output power
  • 105μm fiber core diameter
  • 0.22NA
  • Cooling mode: water cooling

Applications:

  • Material Processing
  • 3D Printing
Specification (20℃) Symbol STK- 445-200-105
Minimum Typical Maximum
Optical Data (1)
Total CW Output Power (W) Pbol (4) 200 - -
Number of submodules pcs - 4 -
Submodule CW Output Power (W) Po - 50 -
Center Wavelength (nm) λ­c 445±20 445±20 445±20
Spectral Width (FWHM), (nm) △λ­ - 6 -
Wavelength Shift with Temperature, (nm/℃) △ λ­/△T - 0.1 -
Wavelength Shift with Current, (nm/A) △ λ­/△A - 1 -
Electrical Data
Electrical-to-Optical Efficiency, % PE - 30 -
Operating Current, (A) Ibol (4) - 3 3.5
Threshold Current, (A) Ith - 0.35 -
Operating Voltage (single module), V Vop - 52 60
Slope Efficiency (single module), (W/A) η - 18.5 -
Power Supply Mode - - 4 modules -
Fiber Data
Core Diameter, (μm) Dcore - 105 -
Numerical Aperture NA - 0.22 -
Minimum Bending Radius, (mm) - 50 - -
Fiber Length, (m) - 5.5
Fiber Termination - - HP-SMA905 -
Thermistor, (KΩ)/β(25℃℃) Rt - 10±3%/3450 -
ESD (V) Vesd - - 500
Storage Temperature (2), (℃) Tst -20 70
Lead Soldering Temp, (℃) Tls - - 260
Lead Soldering Time, sec t - - 10
Operating Temperature (3), (℃) Top 15 - 30
Relative Humidity, % RH 15 - 75

Remark:

(1) Data measured under operation output at 200W@20℃℃.

(2) A non-condensing environment is required for operation and storage.

(3) Operating temperature defined by the thermistor. Acceptable operating range is 15℃℃~30℃℃, but performance may vary.

(4) Product delivery qualification standards: Ibeginning of life ≤ 3.5A Pbeginning of life ≥ 200W.

(5) Within the warranty period, the product is considered qualified with Iend of life =3.5A Pend of life 160W.

2.2. 150W Blue Diode Lasers

Specification (20℃) Symbol STK- 445-150-105
Minimum Typical Maximum
Optical Data (1)
Total CW Output Power (W) Pbol (4) 150 - -
Number of submodules pcs - 3 -
Submodule CW Output Power (W) Po - 50 -
Center Wavelength (nm) λ­c 445±20 445±20 445±20
Spectral Width (FWHM), (nm) △λ­ - 6 -
Wavelength Shift with Temperature, (nm/℃) △ λ­/△T - 0.1 -
Wavelength Shift with Current, (nm/A) △ λ­/△A - 1 -
Electrical Data
Electrical-to-Optical Efficiency, % PE - 30 -
Operating Current, (A) Ibol (4) - 3 3.5
Threshold Current, (A) Ith - 0.35 -
Operating Voltage (single module), V Vop - 52 60
Slope Efficiency (single module), (W/A) η - 18.5 -
Power Supply Mode - - 3 modules -
Fiber Data
Core Diameter, (μm) Dcore - 105 -
Numerical Aperture NA - 0.22 -
Minimum Bending Radius, (mm) - 50 - -
Fiber Length, (m) - 5.5
Fiber Termination - - HP-SMA905 -
Thermistor, (KΩ)/β(25℃℃) Rt - 10±3%/3450 -
ESD (V) Vesd - - 500
Storage Temperature (2), (℃) Tst -20 70
Lead Soldering Temp, (℃) Tls - - 260
Lead Soldering Time, sec t - - 10
Operating Temperature (3), (℃) Top 15 - 30
Relative Humidity, % RH 15 - 75

Remark:

(1) Data measured under operation output at 150W@20℃.

(2) A non-condensing environment is required for operation and storage.

(3) Operating temperature defined by the thermistor. Acceptable operating range is 15℃℃~30℃℃, but performance may vary.

(4) Product delivery qualification standards: Ibeginning of life ≤ 3.5A Pbeginning of life ≥ 150W;

(5) Within the warranty period, the product is considered qualified with Iend of life =3.5A Pend of life 120W.

2.3 100W Blue Diode Lasers

Specification (20℃) Symbol STK- 445-100-105
Minimum Typical Maximum
Optical Data (1)
Total CW Output Power (W) Pbol (4) 100 - -
Number of submodules pcs - 2 -
Submodule CW Output Power (W) Po - 50 -
Center Wavelength (nm) λ­c 445±20 445±20 445±20
Spectral Width (FWHM), (nm) △λ­ - 6 -
Wavelength Shift with Temperature, (nm/℃) △ λ­/△T - 0.1 -
Wavelength Shift with Current, (nm/A) △ λ­/△A - 1 -
Electrical Data
Electrical-to-Optical Efficiency, % PE - 30 -
Operating Current, (A) Ibol (4) - 3 3.5
Threshold Current, (A) Ith - 0.35 -
Operating Voltage (single module), V Vop - 52 60
Slope Efficiency (single module), (W/A) η - 18.5 -
Power Supply Mode - - 2 modules -
Fiber Data
Core Diameter, (μm) Dcore - 105 -
Numerical Aperture NA - 0.22 -
Minimum Bending Radius, (mm) - 50 - -
Fiber Length, (m) - 5.5
Fiber Termination - - HP-SMA905 -
Thermistor, (KΩ)/β(25℃℃) Rt - 10±3%/3450 -
ESD (V) Vesd - - 500
Storage Temperature (2), (℃) Tst -20 70
Lead Soldering Temp, (℃) Tls - - 260
Lead Soldering Time, sec t - - 10
Operating Temperature (3), (℃) Top 15 - 30
Relative Humidity, % RH 15 - 75

Remark:

(1) Data measured under operation output at 100W@20℃℃.

(2) A non-condensing environment is required for operation and storage.

(3) Operating temperature defined by the thermistor. Acceptable operating range is 15℃℃~30℃℃, but performance may vary.

(4) Product delivery qualification standards: Ibeginning of life ≤ 3.5A Pbeginning of life ≥ 100W;

(5) Within the warranty period, the product is considered qualified with Iend of life =3.5A Pend of life 80W.

Packaging Dimension:

1. STK Series blue laser consists of up to 4 submodules(50W per module). Power can be supplied separately or in series.

2. STK Series blue laser cooling water inlet and outlet size: Outer 10mm* Inner 6.5mm.The water flow should be at least 5L/min.

3. *: Optional functions.

Operating Notes

Applications:

  • Avoid eye and skin exposure to direct radiation during operation.
  • ESD precautions must be taken during storage, transportation and operation.
  • Short circuit is required between pins during storage and transportation.
  • Please connect pins to wires by solder instead of using socket when operation current is higher than 6A. Soldering point should be close to the root of the pins. Soldering temperature should be lower than 260 and time shorter than 10 second.
  • Make sure the fiber output end is properly cleaned before operation of laser. Follow safety protocols to avoid injury when handling and cutting the fiber.
  • Use constant current power supply to avoid surge current during operation.
  • Laser diode must be used according to the specifications.
  • Laser diode must work with good cooling.
  • Operation temperature ranges from 15 to 30℃
  • Storage temperature ranges from -20 to +70℃

3. <100W Fiber-coupled Blue Lasers

The STK series fiber-coupled blue lasers are manufactured by adopting specialized fiber-coupling techniques, resulting in high efficiency, stability and superior beam quality. The asymmetric radiation from the laser diode chips are coupled into an output fiber with small core diameter by using special micro optics. Their prices are reasonable and cheaper in the market.

Part Number STK450FFBFN-0.8W STK445F03N-3W STK445FTRFN-20W STK445FTRFN-50W
Optical Parameter Laser power(W) 0.8 3 20 50
Wavelength(nm) 450 445 445 445
Tolerance(nm) ±10 ±10 ±10 ±10
Spectral width(nm) <6 <6 <6 <6
Temperature drift (nm/K) 0.3 0.1 0.1 0.1
Fiber Data Core dia.(um) 105 105 105 200
NA 0.22 0.22 0.22 0.22
Fiber Length (m) 1.0 1.0 3.5 3.5
Connector NIL SMA905 SMA905 SMA905
Thermistor K Ohm option 10 10
Electrical Parameter Operation(A) 1.0 3.0 2.5 2.8
Threshold current(A) 0.25 0.3 0.3 0.3
Operation voltage(V) 4.8 5.2 41 81
Others Operation temp.(oC) 15-35 15-35 15-35 15-35
Store temp.(oC) -20-+70 -20-+70 -20-+70 -20-+70
Dimension(mm) 30x12.7x14.8 20x13.6x16 143x68x37 143x68x37
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