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Description

M885±0.5-65-F105/22-M6 – 65 W 885 nm Fiber-Coupled Diode Laser Module

The M885±0.5-65-F105/22-M6 is a high-power, fiber-coupled semiconductor diode laser module engineered for demanding OEM integration in industrial, scientific, and medical equipment. Operating at a central wavelength of 885 nm with a tight tolerance of ±0.5 nm, this module delivers up to 65 W of continuous-wave optical output at the fiber exit. Its design targets applications requiring efficient optical pumping, materials processing, and high-intensity illumination, while maintaining excellent beam quality and long-term operational stability.

With a typical spectral width of only 1.0 nm (FWHM), the M885±0.5-65-F105/22-M6 provides a spectrally well-defined source ideally suited for pumping solid-state and fiber lasers tuned around 885 nm, as well as for absorption-sensitive processes and precision photonics experiments. The wavelength temperature coefficient of 0.02 nm/°C allows predictable and controllable wavelength tuning via temperature management, which is essential in environments where spectral alignment and stability directly influence system efficiency and performance.

The laser output is delivered through a high-power fiber pigtail designed for robustness and efficient light transmission. Featuring a fiber core size of approximately 200 µm and a numerical aperture typically centered around 0.22, the module ensures effective coupling into downstream optical systems and ease of integration with standard high-power optics. A 1.0–1.2 m fiber length supports flexible routing within laser systems or machinery, while an optional SMA905 connector provides a well-established mechanical interface compatible with many standard collimation and delivery assemblies used in industrial and laboratory environments.

Electrically, the M885±0.5-65-F105/22-M6 is optimized for high conversion efficiency and stable continuous-wave operation. With a threshold current around 1.4 A and typical operating current in the 13–14 A range, the module achieves a slope efficiency of approximately 5.7 W/A and a power conversion efficiency near 50%. This combination of high optical power and strong wall-plug efficiency helps minimize overall system power consumption and thermal load, making the module attractive for compact, thermally constrained OEM designs. The typical operating voltage of about 9.3–9.5 V simplifies driver design and is compatible with many existing high-current laser diode power supplies.

The module is intended to be mounted on a temperature-stabilized baseplate for optimum reliability and wavelength control. Its specified operating baseplate temperature range of approximately 20–25 °C supports stable, repeatable performance in controlled environments, such as laser pumping units, medical treatment heads, or metrology platforms. The device is qualified for operation in relative humidity below 75% and can be stored over a broad temperature range from -20 °C to +80 °C, helping to ensure robustness during transport and system assembly. A maximum pin soldering temperature of 260 °C for up to 10 seconds allows standard soldering procedures during OEM integration.

For system designers who require real-time temperature monitoring and closed-loop control, the M885±0.5-65-F105/22-M6 can be equipped with an optional integrated thermistor with a resistance of 10 kΩ at 25 °C. This enables precise feedback for TEC controllers and ensures tight control of the diode’s junction temperature and output wavelength. Such monitoring capability is particularly beneficial in multi-channel pump units, medical diode stacks, and research setups where long-term stability and repeatability are crucial.

As an OEM fiber-coupled semiconductor diode laser module, the M885±0.5-65-F105/22-M6 is intended exclusively for integration into complete laser systems and other equipment. It is not supplied as a stand-alone, user-operable laser product and is not certified as a finished system under IEC 60825-1 or corresponding FDA/CDRH laser product regulations. The responsibility for final classification, labeling, safety interlocks, and regulatory compliance lies with the manufacturer of the host system in which this module is incorporated. This OEM-oriented approach provides maximum flexibility to system developers while enabling them to design fully compliant, application-specific laser platforms.

Overall, the M885±0.5-65-F105/22-M6 offers a compelling balance of high optical power, narrow spectral width, strong electrical efficiency, and practical fiber delivery in the 885 nm band. Its design aligns with the performance envelopes of advanced high-power diode modules used worldwide for laser pumping, industrial illumination, and precision photonics, making it a robust choice for OEMs seeking a reliable, well-specified 885 nm fiber-coupled laser source to integrate into next-generation systems.

885nm Wavelength-Stablized Fiber-Coupled Diode Laser

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Specifications

Laser Type: Continuous Wave (CW)
Fiber Type: Multi-Mode
Wavelength: 885 nm
Output Power: 65000 mW
Fiber Core Diamater: 200 um
Fiber Cladding Diameter: 220 um
Model: M885±0.5-65-F105/22-M6
Output Power Range (exit Fiber): 65 W
Central Wavelength Tolerance: ±0.5 nm
Spectral Width (FWHM): 1.0 nm
95% Energy Enclosed NA: 0.17
Wavelength Temperature Coefficient: 0.02 nm/°C
Fiber Core Size: 200 µm (196–204 µm)
Fiber Numerical Aperture: 0.22 (0.20–0.24)
Fiber Pigtail Length: 1.0–1.2 m
Fiber Connector (optional): SMA905
Threshold Current: 1.4 A
Operating Current: 13.0–14.0 A
Operating Voltage: 9.3–9.5 V
Slope Efficiency: 5.7 W/A
Power Conversion Efficiency: 50 %
Thermistor Resistance At 25°C: 10 kΩ
Operating Temperature (Baseplate): 20–25 °C
Operating Humidity: < 75 %
Storage Temperature: -20 to +80 °C
Pin Soldering Temperature: 260 °C (10 s)

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Features

  • High-Power 65 W CW Output at 885 nm
    Delivers up to 65 W continuous-wave optical power at a tightly specified central wavelength of 885 nm (±0.5 nm), ideal for pumping solid‑state lasers, materials processing, and high‑brightness illumination.
  • Narrow Spectral Width for Efficient Pumping
    Typical 1.0 nm FWHM spectral bandwidth ensures efficient coupling to narrow absorption bands in Yb‑doped and other solid‑state gain media, improving overall system efficiency.
  • High Brightness Fiber-Coupled Output
    Integrated fiber coupling with 200 µm core and 0.22 NA (0.20–0.24) provides a high-brightness output suitable for tight focusing, fiber delivery, and efficient coupling into secondary optics or fibers.
  • Optimized Beam Quality with 95% Energy Enclosed
    95% of output power enclosed within NA 0.17 delivers a well‑defined, low‑divergence beam from the fiber, enabling consistent performance in precision optical setups.
  • Robust Fiber Pigtail with Standard Connector Options
    Supplied with a 1.0–1.2 m fiber pigtail using a durable, large‑core multimode fiber and optional SMA905 connector for easy integration with standard fiber‑coupled optics and optomechanics.
  • High Electrical-to-Optical Conversion Efficiency (~50%)
    Typical power conversion efficiency of 50% reduces thermal load on the system, enabling more compact thermal management and lowering overall operating costs compared with lower‑efficiency pump diodes.
  • Strong Slope Efficiency for Power Scaling
    A slope efficiency of approximately 5.7 W/A supports efficient power scaling with drive current and facilitates straightforward power control in current‑driven driver circuits.
  • Low Threshold Current for Stable Operation
    Threshold current of about 1.4 A enables early onset of lasing and stable operation in closed‑loop current control systems, helping to minimize wasted electrical power below threshold.
  • Compact OEM Fiber-Coupled Module Design
    Designed as a fiber‑coupled OEM laser diode module for direct integration into industrial, medical, and scientific equipment, streamlining system design while maintaining high reliability.
  • Integrated Thermistor for Precise Temperature Control
    Optional 10 kΩ thermistor at 25 °C allows accurate monitoring of baseplate temperature and supports closed‑loop TEC control to maintain wavelength stability and extend diode lifetime.
  • Excellent Wavelength Stability with Temperature Tuning
    Wavelength temperature coefficient of 0.02 nm/°C offers precise wavelength tuning via temperature control and predictable spectral behavior under varying thermal conditions.
  • Industrial-Grade Operating Conditions
    Designed for baseplate operating temperatures from 20 to 25 °C and operating humidity < 75%, ensuring reliable performance in laboratory and controlled industrial environments.
  • Wide Storage Temperature Range
    With a storage temperature range of -20 to +80 °C, the module withstands demanding shipping and storage conditions without performance degradation when correctly handled.
  • Standard High-Temperature Solderability
    Pin soldering temperature up to 260 °C for 10 s supports compatibility with standard soldering processes during integration, simplifying OEM assembly.
  • Regulatory-Ready OEM Component
    Supplied as an OEM fiber‑coupled semiconductor diode laser module intended for integration into complete laser systems. The system integrator retains control over IEC 60825‑1 and FDA/CDRH (21 CFR 1040.10 & 1040.11) compliance, enabling flexible classification and safety design.
  • Backed by a Specialized Laser Manufacturer
    Developed and manufactured by PhotonTec Berlin GmbH (Germany), a specialist in high‑power diode and DPSS lasers, ensuring proven reliability and consistent performance comparable to leading 885 nm pump modules worldwide.

Applications

  • Pump source for Nd-doped solid-state lasers – Optimized 885 nm wavelength for efficient pumping of Nd:YVO4, Nd:YAG, Nd:YLF, and other Nd-doped gain media in CW and quasi‑CW industrial and scientific lasers.
  • High-power 885 nm laser pumping for ultrafast oscillators – Fiber-coupled diode pump for mode-locked Ti:sapphire and Nd-based ultrafast laser oscillators requiring stable, narrowband pumping around 885 nm.
  • Fiber laser and fiber amplifier pumping – Used as a high-brightness pump diode for specialty fiber lasers and pre-amplifiers that accept ~885 nm pump light for compact, robust OEM systems.
  • DPSS laser modules for materials processing – Integration into diode‑pumped solid-state (DPSS) laser heads used in micromachining, thin-film processing, scribing, cutting, and precision drilling of metals, ceramics, and semiconductors.
  • Laser sources for medical and aesthetic equipment – OEM pump module for medical DPSS lasers used in dermatology, ophthalmology, photocoagulation, dental systems, and aesthetic treatment platforms.
  • Scientific research and laboratory pump lasers – Reliable 65 W fiber‑coupled 885 nm source for spectroscopy, nonlinear optics, laser cooling pump schemes, and general high-power laboratory experiments.
  • Optical parametric oscillator (OPO) pumping – High-power pump diode for compact OPO systems where 885 nm-pumped DPSS lasers are frequency converted into visible or mid-IR wavelength ranges.
  • Laser fluorescence excitation and spectroscopy – Excitation source for fluorescence, time-resolved spectroscopy, and photoluminescence studies requiring a stable, narrowband 885 nm pump wavelength.
  • Pumping of tunable and frequency-doubled lasers – Pump engine for tunable solid‑state lasers and frequency-converted systems (e.g., 442–450 nm, 530–560 nm) derived from 885 nm–pumped gain media.
  • Industrial alignment and illumination in NIR – High-brightness near‑infrared illumination for machine vision alignment, inspection systems, and process monitoring in demanding industrial environments.
  • Infrared test and measurement setups – Stable OEM light source for testing NIR optical components, filters, coatings, and detectors centered near 885 nm.
  • Seed and pump sources in lidar subsystems (NIR) – Integration into 885 nm lidar and range‑finding subsystems where high power and good beam quality via a 200 µm fiber are required.
  • Raman pump for specialty fibers – Pump laser for Raman amplification and nonlinear experiments in specialty fibers and photonic crystal fibers operating in the 0.85–0.9 µm region.
  • Integration into OEM laser engines – Designed as an OEM building block for compact laser engines and multi‑channel pump banks in commercial and industrial laser products.
  • Multi-diode pump arrays and stacks – Suitable for combining multiple 885 nm modules through fiber bundles or free‑space coupling to realize high-power pump arrays for large-aperture solid‑state lasers.
  • Optical communications research (short‑wavelength bands) – Use as a powerful broadband NIR source in experimental short-reach optical communication links, component characterization, and photonic integration research.
  • Defense and security laser subsystems – OEM pump laser for defense-related DPSS and fiber lasers used in target designation, range finding, and compact IR illumination platforms.
  • Pump source for frequency combs and metrology lasers – High-stability pump for Nd-based metrology lasers and frequency comb systems requiring robust diode pumping around 885 nm.
  • Laser-based sensor excitation – Excitation source for optical sensors and NIR absorption-based detection schemes where a high-power, narrow-line 885 nm laser is advantageous.

Frequently Asked Questions

What is the M885±0.5-65-F105/22-M6 fiber‑coupled diode laser and what are its key specifications?
The M885±0.5-65-F105/22-M6 is an OEM fiber‑coupled semiconductor diode laser module from PhotonTec Berlin designed for integration into larger laser systems. It delivers 65 W continuous‑wave (CW) output power at a central wavelength of 885 nm (884.5–885.5 nm) with a typical spectral width of 1.0 nm (FWHM). The laser is fiber‑coupled into a multimode fiber with a ~200 µm core, ~220 µm cladding and 0.22 NA (0.20–0.24), typically supplied with a 1.0–1.2 m pigtail and optional SMA905 connector. On the electrical side, it has a typical threshold current of 1.4 A, operating current of about 13–14 A, operating voltage around 9.3–9.5 V, slope efficiency of about 5.7 W/A, and power conversion efficiency around 50%. It is intended purely as an OEM module and not as a stand‑alone laser system.
What are common applications of a 65 W, 885 nm fiber‑coupled diode laser like the M885±0.5-65-F105/22-M6?
A high‑power 885 nm diode laser with 65 W fiber‑coupled output is typically used as a pump source or direct diode source in industrial and scientific applications. Common uses include: pumping Nd:YAG, Nd:YVO4 or other solid‑state lasers that have strong absorption around 880–890 nm (often for efficient 946 nm or 1064 nm operation); pumping fiber lasers and fiber amplifiers; materials processing and soldering on thin metals and plastics when combined with appropriate optics; heat‑assisted processes (e.g., select medical or therapeutic systems when integrated into certified equipment); illumination or excitation in spectroscopy and fluorescence setups that require 880–890 nm; and research setups that need a compact, efficient high‑power near‑IR source. As with similar 885 nm modules from other vendors, it is designed to be integrated into a higher‑level system that manages optics, cooling, and safety interlocks.
How should the M885±0.5-65-F105/22-M6 diode laser module be driven and thermally managed to achieve 65 W output?
To reach the rated 65 W CW output, the M885±0.5-65-F105/22-M6 must be operated with a low‑ripple, constant‑current laser diode driver in the specified operating current range (typically up to 13–14 A) and with proper heat sinking. The baseplate temperature must be maintained in the specified operating range (20–25 °C), usually with a temperature‑controlled heatsink or water‑cooled cold plate. Because the wavelength shifts by about 0.02 nm/°C, tight temperature control is also needed if precise wavelength alignment (e.g., for pumping) is required. The module can be supplied with a 10 kΩ thermistor (at 25 °C) as an accessory for closed‑loop temperature control. As with comparable high‑power diode modules, users should ramp current slowly, avoid current spikes, and always ensure good thermal contact with the baseplate before applying high current.
What are the fiber and beam delivery characteristics of this 885 nm 65 W fiber‑coupled laser?
The M885±0.5-65-F105/22-M6 is delivered with a multimode fiber pigtail optimized for efficient beam delivery. The fiber core is nominally 200 µm (196–204 µm), with a cladding diameter around 220 µm (typical range 122–220–128 µm as specified), and a numerical aperture (NA) of 0.22 (0.20–0.24). At least 95% of the output energy is enclosed within an NA of 0.17, which simplifies coupling into standard high‑power delivery optics and collimators. The standard fiber length is 1.0–1.2 m, with an optional SMA905 connector for easy integration into existing beam delivery systems. As with similar high‑power multimode pump lasers, users should avoid tight fiber bends, mechanical stress, and contamination of the fiber end face to maintain power handling and lifetime.
What are the storage and operating environmental conditions for the M885±0.5-65-F105/22-M6 module?
The absolute ratings specify that the baseplate operating temperature should be kept between 20 °C and 25 °C under normal use, with operating humidity below 75% non‑condensing. For storage, the diode module can be kept between –20 °C and +80 °C, provided that it is dry and protected from condensation and electrostatic discharge. The maximum pin soldering temperature is 260 °C for up to 10 seconds, in line with many high‑power diode modules on the market. As with other OEM diode lasers, the module should be protected from rapid temperature cycling, mechanical shock, and contamination to maximize long‑term reliability.
Is the M885±0.5-65-F105/22-M6 a certified laser product, and what are the regulatory responsibilities for integrators?
The M885±0.5-65-F105/22-M6 is an OEM fiber‑coupled semiconductor diode laser module, not a complete laser system. It is not certified as a finished laser product under IEC 60825‑1 or the FDA/CDRH laser product performance standards (21 CFR 1040.10 and 1040.11). This is similar to other high‑power pump modules available globally, which are sold strictly for OEM integration. The system or equipment manufacturer integrating this module is fully responsible for: determining the correct laser classification of the final product; implementing required safety features (interlocks, key switch, emission indicators, beam enclosures, etc.); and ensuring that all applicable safety, labeling, protective measures, certification, and reporting requirements are met in the target markets.
What safety precautions are required when handling and operating a 65 W, 885 nm fiber‑coupled diode laser module?
A 65 W near‑infrared diode laser constitutes a very high‑risk laser source (Class 4 in a typical system configuration) and can cause immediate and permanent eye damage and serious skin burns. Even though the M885±0.5-65-F105/22-M6 is an OEM module, it must be handled with the same precautions as comparable high‑power 800–900 nm pump lasers: always wear laser safety eyewear rated for 885 nm with an optical density appropriate for 65 W; enclose the beam path wherever possible; prevent unintended reflections from shiny surfaces; and implement interlocks and emission indicators in the host system. Additionally, protect the fiber connector and end face from contamination or damage, avoid looking into the fiber under any circumstances (even when you think it is off), and use proper ESD precautions during handling and installation.

Got more questions? Use the inquiry form to ask the supplier directly.

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