Thumbnail of 808nm 3.5W Wavelength Stabilized Fiber Coupled Diode Laser photo 1

Description

808 nm Wavelength Stabilized Laser Diode – 3.5 W Fiber‑Coupled Pump Source

This 808 nm wavelength stabilized laser diode is a high‑performance, fiber‑coupled pump source designed for demanding solid‑state laser applications. Delivering up to 3.5 W of optical output power with a central wavelength tightly controlled at 808 nm, it offers the high efficiency and stability required for pumping Nd:YAG, Nd:YVO4, and other neodymium‑doped gain media. The integrated thermoelectric cooler (TEC), monitor photodiode, and thermistor enable precise control of temperature and output power, ensuring consistent performance in industrial and scientific systems.

At the heart of this device is a narrow linewidth, wavelength‑stabilized diode architecture that minimizes spectral drift over time and temperature. Compared with standard broad‑spectrum 808 nm pump diodes, the stabilized emission at 807–809 nm with a typical full width at half maximum (FWHM) of 0.6 nm enhances absorption efficiency in the pumped crystal and improves overall system stability. This makes the module an excellent choice for OEM integrators who need repeatable, tightly specified pump characteristics for DPSS lasers, medical equipment, and precision instrumentation.

The optical output is delivered through a multimode fiber with a 105 µm core and 0.22 NA, a widely adopted standard in the industry that simplifies system design and allows compatibility with common fiber components. A typical fiber length of 50 cm provides flexibility for mechanical integration, while optional SMA905 or FC/PC connectors enable quick, robust coupling to downstream optics. The combination of relatively large core diameter and moderate NA supports efficient coupling from the diode emitter while maintaining good beam quality for pumping applications.

Electrically, the laser diode exhibits a low threshold current around 0.9–1.0 A and typical operation at 4.4–5.0 A, with a slope efficiency of approximately 1.0 W/A. This favorable electro‑optical conversion efficiency reduces heat load and facilitates compact, thermally manageable system designs. Operating voltage is around 1.9–1.95 V, which is compatible with the majority of commercial laser diode drivers. The integrated TEC (rated 2.2 A / 8.7 V) and 10 kΩ thermistor at 25 °C support closed‑loop thermal management for reliable wavelength locking and long‑term stability.

The specified operating temperature range of 30–40 °C (thermistor‑referenced) and storage range from –20 to +80 °C allow the module to be used in a broad spectrum of industrial environments. With operating humidity below 75%, it is well suited to enclosure‑based OEM systems where environmental conditions are controlled. The device is supplied as an industrial OEM laser diode subassembly, intended for integration into higher‑level equipment where appropriate safety measures, interlocks, and certifications will be implemented by the system manufacturer.

This 808 nm wavelength stabilized pump diode is targeted at applications such as DPSS laser pumping, materials processing, medical and aesthetic systems, scientific research setups, and any application where a compact, high‑power, fiber‑coupled 808 nm source with narrow spectral width is required. Its balance of power, wavelength stability, and integrated thermal and power monitoring components provides a robust, ready‑to‑integrate solution for OEM designers who demand consistent, long‑lived performance from their pump modules.

808nm 3.5W Wavelength Stabilized Fiber Coupled Diode Laser

Visit the PhotonTec Berlin GmbH Store

Specifications

Laser Type: Continuous Wave (CW)
Fiber Type: Multi-Mode
Wavelength: 808 nm
Output Power: 3500 mW
Fiber Core Diamater: 105 um
Fiber Cladding Diameter: 125 um
Wavelength Tolerance: +/- 1.0 nm
Spectral Linewidth (FWHM): 1.0 nm
Numerical Aperture: 0.22 -
Typical Threshold Current: 0.9 A
Typical Operating Current: 4.5 A
Typical Operating Voltage: 1.82 V
Maximum TEC Curent, Voltage: 2.2A, 8.7V
Fiber Connector (optional): SMA905, FC/PC, FC/APC
Operating Temperature (built-in Thermistor): 25 - 40 °C
MTTF (100% -> 80% Power): >10,000 hours (under normal operation)

Got questions about specs? Use the inquiry form to ask.

Document icon Download Data Sheet Download icon

Features

  • Wavelength-Stabilized 808 nm Emission – Precisely centered at 808 nm (807–809 nm) with integrated wavelength stabilization, ideal for solid‑state laser pumping and other wavelength‑critical applications.
  • High Output Power up to 3.5 W – Delivers 3.0–3.5 W continuous‑wave optical power, providing ample pump power for Nd:YAG, Nd:YVO4, and other 808 nm‑pumped gain media.
  • Narrow Linewidth for Efficient Pumping – Typical spectral width of only 0.6 nm (FWHM) ensures excellent spectral overlap with absorption bands, enhancing pump efficiency and reducing thermal load in the gain medium.
  • 105 µm, 0.22 NA Fiber-Coupled Output – 105 µm core multimode fiber (102–108 µm, NA 0.20–0.24) simplifies beam delivery, focusing, and coupling into solid‑state and fiber laser cavities.
  • 50 cm Fiber Pigtail with Optional Connectors – Supplied with ~50 cm fiber length; optional SMA905 or FC/PC connectors support compatibility with standard optomechanics and fiber‑coupling assemblies.
  • Integrated TEC for Active Temperature Control – Built‑in thermoelectric cooler (2.2 A / 8.7 V) enables precise temperature stabilization, maintaining wavelength and power stability over changing ambient conditions.
  • Onboard Thermistor Feedback – 10 kΩ @ 25 °C thermistor provides accurate temperature monitoring for closed-loop TEC control and safe, repeatable operating conditions.
  • Integrated Monitoring Photodiode – Built‑in photodiode allows real‑time power monitoring and feedback control, supporting constant‑power or constant‑current operation in OEM systems.
  • High Electrical-to-Optical Efficiency – Slope efficiency of ~1.0 W/A with typical operating current of 4.4–5.0 A and ~1.9–1.95 V drive voltage helps minimize power consumption and system thermal load.
  • Defined Operating Temperature Range – Designed for thermistor‑controlled operation in the 30–40 °C range, enabling stable and repeatable performance in demanding industrial environments.
  • Robust Industrial OEM Package – Engineered as an OEM component for integration into pump modules, DPSS lasers, medical, and industrial laser systems, combining reliability with compact form factor.
  • Stable, Low-Drift Output – Wavelength stabilization, TEC control, and monitored output power deliver low drift over time, current, and temperature — crucial for precision pumping, spectroscopy, and metrology.
  • Optimized for Solid-State Laser Pumping – Specifically tailored for diode‑pumped solid‑state lasers (DPSS), including Nd‑doped crystals and other 808 nm‑absorbing gain media, supporting high beam quality and power scaling.
  • OEM-Ready with Clear Pin Configuration – Detailed pinout for laser diode, TEC, thermistor, and photodiode connections simplifies driver design and integration into custom electronic control boards.
  • Wide Storage Temperature Range – −20 °C to +80 °C storage capability supports safe shipping and long‑term inventory storage without performance degradation when handled properly.
  • Regulatory-Ready OEM Component – Supplied as an industrial/OEM laser diode module; integrators can obtain IEC and CDRH compliance at the system level while benefiting from a high‑performance, pre‑engineered pump source.

Applications

  • Diode‑pumped solid‑state (DPSS) laser pumping – Efficient pump source for Nd:YAG, Nd:YVO4, Nd:YLF and other 808 nm‑absorbing crystals in CW and QCW industrial and scientific lasers.
  • Fiber laser pumping – Pumping of ytterbium‑ and neodymium‑doped double‑clad fiber lasers and fiber amplifiers for materials processing, research, and telecom pre‑amplifiers.
  • OEM laser modules and laser engines – Integration into compact OEM laser heads that require wavelength‑stabilized 808 nm pump diodes with built‑in TEC, thermistor, and monitor photodiode.
  • High‑power DPSS green and UV laser sources – Pump diode for 532 nm, 355 nm, and 266 nm DPSS lasers used in marking, engraving, micro‑machining, and PCB processing.
  • Medical and aesthetic laser systems – Pump source for Nd:YAG and Nd:YVO4 lasers employed in dermatology, tattoo removal, vascular lesion treatment, ophthalmology, and surgical laser platforms.
  • Scientific and laboratory lasers – Stable 808 nm pump laser for precision spectroscopy, nonlinear optics experiments, optical trapping, and atom/ion cooling setups requiring narrow linewidth and low noise.
  • Laser rangefinders and LIDAR pump source – Pumping of pulsed DPSS or fiber lasers used in rangefinding, 3D scanning, and industrial LIDAR where wavelength stability improves system efficiency.
  • Time‑of‑flight and distance measurement instruments – Integration into compact solid‑state laser transmitters for metrology, surveying, and construction alignment tools.
  • Industrial marking and coding lasers – Pumping of DPSS lasers used for high‑contrast marking on metals, plastics, semiconductors, and packaging materials.
  • Micromachining and precision materials processing – Pump diode for short‑pulse and cw DPSS and fiber lasers used in drilling, dicing, cutting, and structuring of glass, ceramics, and thin films.
  • Semiconductor and electronics manufacturing – High‑reliability pump source for lasers used in wafer scribing, LCD/OLED processing, and micro‑electronics patterning.
  • Holography and interferometry sources – Stable pump for single‑frequency DPSS lasers used in holographic recording, interferometric measurements, and optical metrology.
  • Optical communication test and measurement – Integration into laboratory pump lasers for erbium‑doped fiber amplifier (EDFA) development, component characterization, and reliability testing.
  • Sensing and spectroscopy – Narrow‑linewidth 808 nm pump for Raman, fluorescence, and absorption‑based spectroscopic systems requiring stable excitation power.
  • Optical parametric oscillator (OPO) pumping – Pump source for compact OPO systems where wavelength‑stabilized 808 nm pumping enhances conversion efficiency and output stability.
  • Nonlinear frequency conversion – Pumping of second‑harmonic and sum‑frequency generators in crystals such as LBO, BBO, and KTP for generation of visible and UV wavelengths.
  • Defense and aerospace laser subsystems – OEM pump diode for ruggedized DPSS and fiber lasers used in targeting, designation, rangefinding, and illumination (integration by qualified system manufacturers).
  • Robotics and machine vision illumination (indirect) – Pumping of DPSS or fiber sources that provide structured light or high‑brightness illumination for 3D vision and inspection.
  • Education and training systems – Use in university and R&D lab demonstrators for laser physics, solid‑state laser design, and thermal management of high‑power diodes.
  • Custom OEM instrumentation – Integration into spectroscopy platforms, analytical instruments, or precision optical equipment where a compact, fiber‑coupled, wavelength‑stabilized 808 nm source is required.

Frequently Asked Questions

What is the M808±0.5-3.5-F105/22-R1-TP 808 nm wavelength-stabilized laser diode and what are its key specifications?
The M808±0.5-3.5-F105/22-R1-TP is a wavelength-stabilized 808 nm fiber-coupled laser diode designed primarily for solid-state laser pumping (e.g., Nd:YVO4, Nd:YAG). It delivers up to 3.5 W of optical output power at a central wavelength of 808 nm with a narrow spectral width of about 0.6 nm (FWHM). The laser is coupled into a 105 µm core multimode fiber (NA 0.22, typical length 50 cm) with optional SMA905 or FC/PC connectors. It includes an integrated TEC, thermistor, and monitor photodiode for precise temperature and power control. Typical electrical parameters are 0.9–1.0 A threshold current, up to 4.4–5.0 A operating current, about 1.9–1.95 V forward voltage, and a slope efficiency around 1 W/A at 30 °C thermistor temperature.
What are the main applications of this 808 nm wavelength-stabilized laser diode?
This 808 nm diode is optimized for precision solid‑state laser pumping where tight wavelength control and narrow linewidth are critical for efficient absorption, such as pumping Nd:YAG, Nd:YVO4, and other Nd-doped crystals at 808 nm. Compared with standard 808 nm pump diodes, the wavelength-stabilized design and 0.6 nm FWHM linewidth reduce thermal drift and increase pump efficiency, which is especially important in DPSS lasers used for industrial marking, medical devices, scientific research, and OEM laser modules. It can also be used in applications requiring stable 808 nm illumination, such as IR illumination and materials processing, as long as the integrator provides appropriate safety measures and compliance.
How is the 808 nm pump laser diode thermally and optically stabilized (TEC, thermistor, photodiode)?
The module integrates three key components for stabilization: 1) TEC (Thermoelectric Cooler): A 2.2 A / 8.7 V TEC is built into the package to actively control the laser diode temperature. By driving the TEC with a temperature controller, you keep the thermistor temperature (and thus the chip temperature) typically in the 30–40 °C range, which stabilizes the emission wavelength around 808 nm. 2) Thermistor: A 10 kΩ NTC thermistor (10 kΩ @ 25 °C) is connected to the TEC controller to provide temperature feedback. The optical specifications in the datasheet are given for 30 °C thermistor temperature. 3) Monitor Photodiode: An internal photodiode (P and N pins) monitors the output power. A laser diode controller can use this signal in constant-power (CP) mode for power stabilization and long‑term reliability. The combination of TEC, thermistor, and monitor photodiode is standard for high-end pump diodes and enables precise control of both power and wavelength.
What fiber characteristics and connector options does this 808 nm laser diode offer?
The laser output is coupled into a multimode fiber with these characteristics: - Core diameter: typically 105 µm (min 102 µm, max 108 µm) - Numerical aperture (NA): 0.22 typical (0.20–0.24 range) - Fiber length: typically 50 cm (min 48.5 cm) This configuration is common for 3–5 W class 808 nm pump diodes and is compatible with many commercial DPSS pump heads and fiber‑coupled delivery optics. The device can be supplied with optional standard connectors, typically SMA905 or FC/PC, which allow straightforward integration into existing optical setups and fiber collimation assemblies. When choosing optics, ensure compatibility with a 105 µm, NA 0.22 multimode fiber and 808 nm wavelength.
How should I drive and cool the M808±0.5-3.5-F105/22-R1-TP to achieve 3.5 W output and long lifetime?
For safe operation and maximum lifetime: - Use a low‑noise laser diode driver capable of delivering up to about 5 A with current limiting and soft-start. - Operate near the typical conditions: threshold current ~0.9–1.0 A, operating current up to ~4.4–5.0 A, and forward voltage ~1.9–1.95 V. - Implement active temperature control with a dedicated TEC controller using the built‑in TEC and 10 kΩ thermistor, keeping the thermistor temperature within 30–40 °C as specified. - Use the integrated photodiode for constant power (CP) feedback if stable output is required; otherwise, constant current (CC) mode with careful monitoring is possible. - Mount the package on an adequate heat sink to remove residual heat from the TEC and laser. These practices are consistent with typical high‑power 808 nm pump diodes on the market and help maintain wavelength stability, avoid thermal runaway, and extend diode lifetime.
What are the environmental and operating limits for this 808 nm laser diode module?
The specified environmental and operating limits are: - Thermistor (operating) temperature: 30–40 °C - Operating humidity: < 75 % non‑condensing - Storage temperature: –20 to +80 °C The optical and electrical specifications apply at a thermistor temperature of 30 °C, so performance may shift slightly if you operate closer to 40 °C. As with similar high‑power pump diodes, avoid rapid thermal cycling, condensation, and operation outside the specified temperature and humidity ranges to prevent damage to the diode, fiber pigtail, and internal components.
Does this 808 nm laser diode comply with IEC / CDRH laser safety standards, and can it be used as a standalone laser product?
No. This 808 nm laser diode is an industrial OEM component intended strictly for integration into other equipment or systems. As stated by the manufacturer, it does not on its own comply with IEC 60825 or CDRH (FDA) laser safety regulations. The system integrator is fully responsible for designing appropriate safety features (interlocks, key switches, emission indicators, labeling, enclosures, etc.) and for obtaining IEC and/or CDRH certifications for the final laser product. This is standard practice for high‑power pump diodes of this class offered worldwide: they are sold as components and must be built into a compliant laser system by the OEM customer.

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

Similar Products

Request Quote