Laser Diodes, Laser Modules

Image Part Number Description / PDF Quantity Rfq
015287

015287

Excelitas Technologies

LASER MODULE 488NM 40MW

1

015227

015227

Excelitas Technologies

LASER MOD INTERLOCK UNIT V2&PSU

1

TPG2EW1S09

TPG2EW1S09

Excelitas Technologies

LASER DIODE 905NM 85W RADIAL

193

015295

015295

Excelitas Technologies

LASER MODULE 642NM 100MW

0

015281

015281

Excelitas Technologies

LASER MODULE 405NM 50MW

1

TPGEW1S09H

TPGEW1S09H

Excelitas Technologies

LASER DIODE 905NM 70W RADIAL

207

015283

015283

Excelitas Technologies

LASER MODULE 405NM 200MW

0

015300

015300

Excelitas Technologies

LASER MODULE 505NM 50MW

1

015286

015286

Excelitas Technologies

LASER MODULE 488NM 20MW

1

015284

015284

Excelitas Technologies

LASER MODULE 445NM 75MW

1

015296

015296

Excelitas Technologies

LASER MODULE 660NM 80MW

1

015289

015289

Excelitas Technologies

LASER MODULE 488NM 140MW

1

015288

015288

Excelitas Technologies

LASER MODULE 488NM 100MW

0

015285

015285

Excelitas Technologies

LASER MODULE 473NM 75MW

1

015301

015301

Excelitas Technologies

LASER MODULE 780NM 70MW

1

DPGEW1S09H

DPGEW1S09H

Excelitas Technologies

LASER DIODE 905NM 45.0W RADIAL

5

LQPGAU1S03

LQPGAU1S03

Excelitas Technologies

EPI3 PULSE LASER 905NM 20W

108

015290

015290

Excelitas Technologies

LASER MODULE 515NM 20MW

0

015293

015293

Excelitas Technologies

LASER MODULE 637NM 100MW

1

015279

015279

Excelitas Technologies

LASER MODULE 375NM 20MW

0

Laser Diodes, Laser Modules

1. Overview

Laser diodes (LDs) are semiconductor devices that emit coherent light through stimulated emission. Laser modules integrate LDs with optical components, drivers, and thermal management systems. These devices are critical in telecommunications, medical systems, industrial processing, and consumer electronics due to their high efficiency, compact size, and precise beam control.

2. Main Types and Functional Classification

TypeFunctional FeaturesApplication Examples
Edge-Emitting Laser DiodesHigh power output, narrow spectral widthFiber optic communication, LIDAR
Vertical-Cavity Surface-Emitting Lasers (VCSELs)Low divergence beam, array scalability3D sensing, data centers
Quantum Cascade LasersTunable mid-infrared emissionGas sensing, spectroscopy
Fiber-Coupled Laser ModulesIntegrated beam shaping, wavelength stabilizationMaterial processing, medical surgery
Multi-Transverse Mode LasersHigh brightness, multimode outputLaser projection, defense systems

3. Structure and Components

Laser Diodes: Composed of an active region (quantum well structure), cladding layers, and a resonant cavity formed by cleaved facets. Electrical contacts enable current injection.

Laser Modules: Integrate LDs with:

  • Collimating optics and beam-shaping elements
  • Photodiode feedback for power stabilization
  • Thermoelectric coolers (TEC) for temperature control
  • Driver circuits with modulation capabilities

4. Key Technical Specifications

ParameterDescriptionImportance
Wavelength (nm)Emission spectrum peakDetermines material compatibility and application suitability
Output Power (mW/W)Optical power levelCritical for processing speed and transmission distance
Wall-Plug Efficiency (%)Electrical-to-optical conversion rateAffects thermal management and power consumption
Beam Quality (M )Deviatoin from ideal Gaussian beamImpacts focusing precision and coupling efficiency
Lifetime (hours)Mean time before power 10%System reliability and maintenance intervals

5. Application Fields

Telecommunications: DWDM systems, free-space optical links

Medical: Laser scalpels, photodynamic therapy devices

Industrial: Cutting/welding machines, 3D printers

Consumer Electronics: LiDAR for AR/VR, facial recognition systems

Scientific: Atomic clocks, quantum computing research

6. Leading Manufacturers & Products

ManufacturerRepresentative ProductKey Features
LumentumLD-XX-Y Series1550nm wavelength, 100mW output, telecom-grade reliability
IPG PhotonicsLM-ABC-10WSingle-mode fiber delivery, 10W output at 976nm
CoherentOBIS Flexx SeriesTunable visible/near-IR output, integrated control
Hamamatsu PhotonicsL8612 SeriesPulsed VCSEL with 940nm peak wavelength

7. Selection Guidelines

Key considerations:

  • Wavelength compatibility with target material/transmission medium
  • Required power stability over temperature variations
  • Modulation speed requirements for communication systems
  • Environmental factors (humidity, vibration, operating temperature)
  • Form factor constraints and cooling method availability

8. Industry Trends

Emerging developments include:

  • High-power single-mode fiber lasers for metal processing
  • VCSEL arrays with >50% wall-plug efficiency for LiDAR
  • Photonic integrated circuits combining LDs with modulators
  • UV and deep-IR emitting devices for advanced spectroscopy
  • AI-driven thermal management systems for extended lifetime

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