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    • 1250nm DFB Laser Diode     


    The PL-DFB-1250-A-A81 1250nm DFB laser diode module made by LD-PD is a cost effective, highly coherent laser source. The DFB laser diode chip is packaged in an industry standard hermetically sealed 14 pin butterfly package with TEC and PD Built in.



    Product model


    Name Model Price
    1250nm DFB PM Laser diode   [PDF]  [RFQ]

    PL-DFB-1250-A-A81-PA     		[Please inquire]
     Call us 
    1250nm DFB SM Laser diode   [PDF]  [RFQ]

    PL-DFB-1250-A-A81-SA     		[Please inquire]
     Call us 

    Parameter


    Features

    ● Narrow Linewidth < 2MHz

    ● Excellent wavelength control and stability

    ● Industry Standard 14 pin Butterfly package

    ● Mode-Hop free tuning

    ● Excellant reliability

    ● Customer specific wavelengths available

    Laser Specifications

    Electrical/Optical Characteristics(Tsub=25°C, CW bias unless stated otherwise)

    Parameter

    Symbol

    Min

    Typ

    Max

    Unit

    Centre Wavelength

    λ

    1249

    1250

    1251

    nm

    Side Mode Suppression Ratio

    SMSR

    30

    40


    dB

    Threshold Current

    Ith


    35

    50

    mA

    Operating Current

    Iop


    700

    800

    mA

    Chip output Power

    Pf


    100

    115

    mW

    Quantum Efficiency

    η

    0.08

    0.12


    mW/mA

    Current Tuning Coefficient

    ∆λ/∆I


    0.015


    nm/mA

    Temperature Tuning Coefficient

    ∆λ/∆T


    0.12


    nm/K

    Forward Voltage

    Vf


    1.3

    2

    V

    Thermistor Resistance

    RT

    9.5

    10

    10.5

    KΩ

    Thermistor Temp. Coefficient



    -4.4


    %/°C

    Connector

    FC/APC


    Spectrum

    1250.png


    Tuning Characteristics

    1250.3.png


    L-I Curve

    1250.1.png


    Linewidth Measurement（CW,74.928 kHZ@25deg,150mA)  

    1250.4.png


    Beam Quality Profiler (2D/3D) 

    D)XRNI6(B736%L%HB68S3.jpg    

    2D 


     ZUYY5)4Z332N5V9_ZJ`JF.png

    3D 

    Polarization Extinction Ratio Test

    1250.5.png



    Package Size

    2047.92.png

    Pin definition

    ZQIRNQSF5.jpg


    1

    Thermoelectric Cooler (+)

    8

    N/C

    2

    Thermistor

    9

    N/C

    3

    PD Monitor Anode (-)

    10

    Laser Anode (+)

    4

    PD Monitor Cathode (+)

    11

    Laser Cathode (–)

    5

    Thermistor 

    12

    N/C

    6

    N/C

    13

    Case Ground

    7

    N/C

    14

    Thermoelectric Cooler (–)


    Absolute  Maximum Ratings

    Item

    Unit

    Min

    Typ

    Max

    Case Temperature

      ℃

    -5

    25

    70

    Chip Temperature

    ℃

    +10

    25

    40

    Operating Current

    mA

    0

    700

    800

    Forward Voltage

    V

    0.8

    1.2

    1.8

    TEC Current

    A

    -

    -

    1.2

    Reverse Voltage（LD）

    V

    -

    -

    2.0

    Reverse Voltage(PD)

    V

    -

    -

    20

    Application

    ● Tunable diode laser absorption spectroscopy

    ● Seed laser

    ● Fiber laser

    Ordering Info

    PL-DFB-□□□□-☆-A8▽- XX

    1250: 1250nm

    1512: 1512nm

    1567: 1567nm

    1572: 1572nm

    *****

    1674.4: 1674.4nm

    ☆: Output Power

    A: 100mW

    B: 150mW

    ▽: Wavelength Tolerance

    1: ±1nm

    2: ±2nm

    XX: Fiber and Connector Type

    SA=SMF-28E+ FC/APC

    SP=SMF-28E+ FC/PC

    PP=PM Fiber+ FC/PC

    PA=PM Fiber+ FC/APC



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    Add : 288 Woodlands Loop #04-00, Singapore 738100 Email : info@ld-pd.com Tel : （+65)31638599 Fax : (+65)31588700 Copyright © 2012-2025 LD-PD PTE. LTD. All Rights Reverved  LD-PD PTE. LTD. is proud to be RoHS certified through SGS and ISO9001 certified through GIC.
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