Home  >  Wavelengths 600nm-795nm  >  LD4B, formerly LasersCom  >  LD4B-685-FP-20-COAXB-3-SM04-FA-CW-0.5


685nm, 20mW, Coaxial Single Mode Fiber-Coupled Laser Diode

  • 685nm 20mW laser diode
  • 685nm, 20mW, Laser Diode Specifications
  • 685nm, 20mw, Fiber Coupled Laser Diode Pinout
  • 685nm Laser Diode 20mW Coaxial Top View

sku / item#: LD4B-685-FP-20-COAXB-3-SM04-FA-CW-0.5
ships: Request a Quote for Current Ship Date

Key Features
  • Wavelength: 685 nm
  • Optical Power: up to 20 mW in CW
  • Single Mode Fiber, FC/APC Connector
  • Optional PM Fiber: Fujikura SM63, PANDA type
  • Sold and Supported by LaserDiodeSource.com, a division of Laser Lab Source

Price and Delivery Quote

Buy Now / Add to Cart

Technical Questions for this Product


Customers Also Considered:

Why do Scientists & Engineers Choose Laser Lab Source?

MODEL LD4B-685-FP-20-COAXB-3-SM04-FA-CW-0.5
PRICE $425.00
  • Wavelength: 685 nm
  • Optical Output Power: 20 mW
  • Spectral width: 0.3 nm
  • Polarization Extinction Ratio: PER 20 dB CW, (Optional SMP04 Fiber)
Electrical Specifications
  • Threshold current: 60 mA
  • Operating current: 120 mA
  • Operating voltage: 3.0 V
  • Slope efficiency: 0.27 mW/mA
  • Monitoring Output Current (PD): 0.5 mA
Output Fiber Specifications
  • Corning SMF-28 Ultra Fiber; Furcation Tubing ⌀0.9 mm
  • Connector: FC/APC
  • Other Fiber and Connector Types Available; Inquire
Optional Polarization Maintaining Fiber
  • PM Fiber Fujikura SM63, PANDA type
  • Inquire for Formal Quote and to Order

Product Overview:

685nm, 20mW FP Single-Mode Fiber Coupled Laser Diode

LD4B-685-FP-20-COAXB-3-SM04-FA-CW-0.5 is an InGaAlP quantum well laser diode with integrated photodiode, coupled to an optical fiber and packaged into a hermetic TO-case. This compact coaxial laser is mounted in a double-sided bracket to facilitate mounting and heat-sinking.
    • Wavelength: 685 nm
    • Cavity type: Fabry-Perot
    • Optical power: up to 20 mW in CW mode in a single-mode fiber,
    • Package type: compact coaxial with double-sided bracket
    • Built-in monitor photodiode

    Proper Handling and Operation of Diode Lasers

    Diode lasers are highly susceptible to damage from ESD and from temperatures exceeding their specified safe operating range. The user is advised to use care and proper ESD safety practices when handling them to avoid damage to the laser. A properly rated low noise current source, a low thermal resistance mount and a temperature controller should be used for optimal device performance and reliability.

Why do Scientists & Engineers Choose Laser Lab Source?

  • Get DIRECT, Fast Tech-Support from the Product Engineer, No Sales Person in the Middle

  • Get the Lowest Price, Factory Direct, No Mark-Up's, Suppliers Post their Own Price

  • Get a 30 Day Evaluation Period with No Risk Return on Most Products, Check Availability