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Laser components

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On this page we explain some key points about laser assembling process and about components that we use.

Endurance laser diode components (datasheet)

We use only high-quality components to assemble our lasers.

We do quite advanced metalwork.

We equip our 8W lasers only with high-quality diode 6W+ NUBM44 with 445nm.

The heart of our 8.5W+ and 10W, 10W+, 20W lasers is a high-quality NUBM47 with the 7W pure rated power output, all of which we check and test before assembling!


All diodes are being carefully tested every time before the final assembling.
We do final tests before shipping the entire laser module to our customers.

6W diode
They are well tested before we do laser assembling! An Endurance experimental data for NUBM44 / 47 NICHIA laser diode

solid-state diode
An average power output for the 8W diode laser is 6.8W. The max power output is 8W-8.5W when it runs in impulsive mode.All Endurance lasers have real and rated power output.We make smart drivers controlling the power going to the laser diode; the driver prevents uncontrollable power consumption and keeps the laser diode module safe.
laser diode
We also make a very efficient cooling mechanism with 12V fans to cool the heatsink. Thereby, our lasers are able to work up to 5000-10000 hours. Their lifetime is 10-100 times longer than that of most of the Chinese analogs.

We only purchase original NICHIA LD

Keep in mind that True Nichia LD have bar code

endurance laser test
We are proud of our reliable and efficient lasers.
All our lasers are handmade and individually tested, which makes for their quality and reliability assurance.

Laser diodes datasheet for 8 watt / 8.5 watt / 10 watt / 10 watt+ / 20 watt laser modules


Testing all Endurance lasers using a calorimeter


Running the laser in impulse mode


The maximum laser frequency is 100 kHz



A universal Endurance laser box for your diode laser. Proceed >>>

Proceed with a fast and secure checkout. An Ultimate laser box tool for you laser diode.

Laser specs

Laser power 10 watt+ 10 watt 8.5 watt 8 watt 5.6 watt 3.5 watt 2.1 watt
Laser Type Nichia diode
Diode model NUBM47 NUBM44 NUBM44 NUBM44 NDB7A75 NDBM08 M140
Max Laser Optical Power Output 10000mW ± 15% 10000mW ± 15% 8500mW ± 15% 8000mW ± 15% 5600mW ± 15% 3500mW ± 15% 2100mW ± 15%
Focal Length 2-10cm (variable) for 3 element lens | 2-10mm (variable) for G2 lens
Laser Wavelength 445nm
Lens Type 3 element long focal lens | G2 short focal lens
Operation Time Tested 48-72 hours continuous
Voltage 9-24V 9-16V
Current 5-8A 5-8A 5-6A 4-5A 3-4A 2-3A 1.5-1A
Cooling TEC cooling with additional heatsink Active air blowing with 4 fans Active air blowing with 3 fans Active air blowing with 1 fans
Mount Ultra compatible and universal
Installation Process Full guidance
Minimum Laser Pixel (spot) Size 0.1 mm (100 uM)
Power adjustment Endurance MO1 PCB (2 wires) Additional wire TTL/PWM control (1-12V)
Laser Dimensions (W x L x H) 65 x 105 x 110 (115) mm (2.5 x 4.15 x 4.5)” 60 x 95 x 60 mm (2.4 x 3.7 x 2.4)” 55 x 95 x 105 mm (2.1 x 3.7 x 4.1)” 50 x 95 x 50 mm (1.7 x 3.75 x 1.7)” 50 x 95 x 50 mm (1.7 x 3.75 x 1.7)” 40 x 95 x 40 mm (1.5 x 3.75 x 1.5)” 40 x 95 x 40 mm (1.5 x 3.75 x 1.5)”
Laser Weight 595 g (4/3″ lbs) 216 g (1/2″ lbs) 240 g (1/2″ lbs) 240 g (1/2″ lbs) 170 g (1/3″ lbs) 150 g (1/3″ lbs) 150 g (1/3″ lbs)
Laser Driver External laser control box Internal laser driver
Lifetime 10 000 hours+ 10 000 hours
Maintenance Is not required
Additional power Required for fans and TEC cooling Required for fans Is not required

Endurance laser design

We have 2 design modifications for 2100 mW, 3500 mW, 5600 mW diode laser modules: smaller (11.5 x 4 x 4 cm, weight 160 gr.) and bigger (9.5 x 7.5 x 9 cm, weight 190 gr.)

Endurance lasers drawing (incl. PRO versions)

Aluminum housing for 8 watt and 8.5 watt+ laser.
Aluminum plate for 20 watt laser (laser beam combiner mechanism).
10 watt and 10 watt+ laser aluminum housing.
Endurance custom build heatsink

10 plus PRO

8.5 watt PRO

Heatsink 10 watt (incl. PRO)

Alternative aluminum housing ver 1.1

Aluminum housing ver 2.0



How to test the laser. An easy way

Endurance lasers are certified

Here is a declaration of conformity for all diode lasers that are produced by Endurance (Rus, PDF) | (Eng, PDF)

About laser diodes

An NUBM44 is a 445nm laser diode that emits 6 watt of optical power on the average. At the moment it is the highest power laser diode in a 9mm TO-5 mount. A NUBM44 is specified with a typical center wavelength of 445nm (dark blue). This is a multi-mode laser diode, it has a pretty narrow waveguide, which allows it to have nearly the lowest etendue (far field divergence for a given beam diameter) of any high-power semiconductor laser. The narrow emitter width enables to better collimate and focus it than other high-power laser diodes.
This is a big advantage of this unit.

This laser has a chemical formula of GaN. The laser operates at temperatures up to 60-65C without significant power or lifetime loss. But the colder the laser – the better. But if the temperature exceeds 70-80C the diode can dramatically lose its power before final degradation.
The temperature shift to colder parameters will decrease the laser wavelength.

General datasheet about NUBM44

  • Gallium Nitride (GaN) blue laser diode
  • 6.0 watt blue laser, 445nm wavelength;
  • easy to focus and collimate;
  • a compact TO-5 (9mm) mount;
  • a wide range of operating temperatures (0C to 65C);
  • a longer lifetime at higher operating temperatures due to GaN.

The NUBM44 laser diode is temperature indifferent compared to other high-power semiconductor laser diodes. It is known to operate in a temperature range of 0C – 65C. The NUBM44 lifetime is 10 000 – 20 000 hours at 25C.

If the blue laser’s temperature goes up to 65C, the diode (laser) lifetime decreases very slightly, thanks to the recently developed Gallium Nitride laser technology. The Gallium Arsenide laser technology used for red and NIR laser diodes is unable to ensure the same.

Thus, this blue laser diode is a reliable choice for various environments and applications. Additionally, this GaN laser has a special TO-5 (9mm) mount, which helps reduce its thermal resistance. The 9mm TO-5 mount is hermetically sealed, which protects the semiconductor laser chip from dust and other contamination. In contrast, high-power red and NIR laser diodes typically require a C-mount package, which has an exposed facet, making them subject to issues with reliability if not operated in a clean-room environment.

The NUBM44 laser diode is relatively indifferent to higher operating temperatures, however, we do recommend using a suitable heatsink with a NUBM44 and other high-power laser diodes. Specifically, a low-thermal-resistance (ideally less than 1.5C/W) mount should be used due to a large amount of heat generated (approximately 12W) when this laser is operating full power.

A laser diode mount with low thermal resistance will reduce the amount of localized heating produced by the laser element and minimize the path to thermal ground. Such a TO mount will also reduce the amount of thermal drift, which affects both the power and wavelength. Thermal resistance can be minimized by pressing the TO header against a flat heat spreader surface machined from materials such as Aluminum, Copper or Brass; as well as by soldering it; applying a thin layer of thermal paste can also be helpful.

In order to collimate this laser diode well and collect as much light as possible, we recommend using a collimation lens with a high numerical aperture (e.g., NA greater than 0.50). This is because the far field divergence on the fast axis is typically 44 degrees. Without a fast (high-NA) lens, some of the power will be lost. Using a longer focal length lens will improve the blue laser diode’s ability to be collimated. To further reduce the slow axis divergence, it is possible to expand the beam on the slow axis using two cylindrical lenses, which Opt Lasers also provides on its website. However, in certain applications having a short working distance, it is sufficient to use only a single collimation lens.

There are numerous and varied applications for the NUBM44 diode due to its unique lasing wavelength of 445nm. Applications include engraving, phosphor pumping, fluorescence microscopy, imaging, optogenetics, RBG light sources, art and architecture, illumination and Thulium-doped fiber pumping, as well as many being currently developed. For example, by using this laser diode to pump phosphor, some of the lowest etendue white (broadband) light sources can be created.

Note that the NUBM44 laser diode is very similar to NUBM47. However, our testing suggests that NUBM44 has a lower threshold current and higher efficiency than NUBM47 as well as a similar lifetime and operating power of 6 watt. The ability of both laser diodes to be collimated and focused is also similar. For these, and other reasons which are proprietary, we believe the NUBM44 is currently the better option.

If a different violet, blue, green or red laser diode is preferred, other than 445nm, we also offer high-power lasers with other wavelengths, such as 405nm, 422nm, 465nm, 520nm, and 638nm. We also offer accessories for laser diodes. These include laser diode mounts, laser connectors, collimation and focusing lenses, including short focal G-2 lenses, cylindrical lens pairs, as well as electronics, such as TEC controllers and laser diode current drivers, Endurance MO1 PCB.

NUBM44 datasheet

Wavelength: 445(nm)

Output Power: 6000(mW)

Transerve model: Multi-model

Operation Model: CW

Ellipticity: >95%

Beam Quality(M2): <1.5

Power Stability <5% (rms,over 4hours)

Pointing Stability: <5% (mrad,after warm up)

Warm up Time: <1 (minutes)

Beam Divergence: <1.5 (mrad,full angle)

Beam Diameter: <1.5 (mm,at beam aperture after collimation lens)

Opeartion Tempearture: 0-65(°C)

Input Voltage: <5.5VDC

Input Current: >2A

Mount: TO-5 (9mm)


Independent NUBM44 / 47 NICHIA diode test 7W Blue Diode 450nm Long Term Testing 09/02/19


6 watt optical power can be reached @ 4.7A x 4.70 V = 22.09 W Input Power (by APS)
or @ 3.5 A x 4.53 V = 15.86 W Input Power (by DTR)


7 watt optical power can be reached @ 5.8A x 59V = 26.62W Input Power (by APS)
or @ 4.7 A x 4.77 V = 22.42 W Input Power (by DTR)


Endurance lasers power consumption

Measuring of voltage, current and wattage

Laser cutting and laser engraving for home and for business.

Advantages of Endurance lasers

High-quality standard

Multi-level testing system.
Industrial components.

Ultra reliable

The guaranteed duration of the continuous operation ~48-72 hours.

True continuous power output

Our products have the rated power output as advertised – unlike Chinese analogues.

TTL mode

Can be turned on and off with 3.5-24V.
Variable power output.

Plug and play

Universal and compatible mount.
Compatible with most 3D printers and CNC machines.

Friendly return policy

Do not like the laser?
Simply return within 30 days and get a full refund.

Laser attachments and laser engraving (marking) machines.

Why do our customers buy lasers and engraving machines from Endurance?

Real-time advice

We assist and give advice by Phone / Email / Facebook messenger / Telegram / Whatsapp / Viber.

Professional support

We help to install and tune the laser. We offer qualified after-sales support.

Everything you need

We ship everything you need in one parcel to get started.

Immediate delivery

We ship all units within 4-24 hours. DHL express delivery allows you to get the package in 3-5 days.

Lifetime warranty

All our lasers are tested and could work up to 10000 hours.

Upgrade option

Do you have an old model? Upgrade your unit with more powerful one.

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