• Home
  • Laser diode
  • Distributed Feedback Laser
  • 1844nm DFB Tunable Laser Diode

    • 1844nm DFB Tunable Laser Diode     


    The PL-DFB-1844-A1 1844nm 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
    1844nm DFB SM Laser diode   [PDF]  [RFQ]

    PL-DFB-1844-A-A81-SA     		[Please inquire]
     Call us 
    1844nm DFB PM Laser diode   [PDF]  [RFQ]

    PL-DFB-1844-A-A81-PA     		[Please inquire]
     Call us 

    Parameter


    Features

    ● Narrow Linewidth < 2MHz

    ● Excellent wavelength control and stability

    ● Industry Standard 14 pin Butterfly package

    ● Mode-Hop free tuning

    ● Excellent 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

    1843

    1844

    1845

    nm

    Side Mode Suppression Ratio

    SMSR

    30

    40


    dB

    Threshold Current

    Ith


    20

    25

    mA

    Operating Current

    Iop


    100

    120

    mA

    Chip output Power

    Pf

    3

    4

    5

    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

    Polarization Extinction RatioPER≥1825
    		dB

    Thermistor Temp. Coefficient



    -4.4


    %/°C

    Connector

    FC/APC


    Spectrum

    1844nm DFB Laser.png

    L-I Curve

    1844nm DFB Laser1.png


    Tuning Characteristics

    1844nm DFB Laser3.png


    Beam Quality

    D)XRNI6(B736%L%HB68S3.jpg    

    2D 


     ZUYY5)4Z332N5V9_ZJ`JF.png

    3D

    Package Size

    1798.2.png

    Pin definition

    1844nm DFB Laser4.png

    Pin Connection

    PIN#

    Function

    PIN#

    Function

    1

    TEC(+)

    8

    NC

    2

    Thermistor

    9

    NC

    3

    NC

    10

    LD anode(+)

    4

    NC

    11

    LD cathode(-)

    5

    Thermistor

    12

    NC

    6

    NC

    13

    Case Ground

    7

    NC

    14

    TEC(-)


    Absolute  Maximum Ratings

    Item

    Unit

    Min

    Typ

    Max

    Case Temperature

      ℃

    -5

    25

    70

    Chip Temperature

    ℃

    +10

    25

    40

    Operating Current

    mA

    0

    100

    120

    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

    ● Gas Monitoring

    Ordering Info

    PL-DFB-□□□□-☆-A8▽-XX

    □□□□：Wavelength

    1512: 1512nm

    *****

    1653.7: 1653.7nm

    1844: 1844m

    ☆ ：Output Power

    A：5mW

    B：10mW

    ▽：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



    By using this website and services, you agree to our use of cookies. Cookies enable us to better provide member services and record your browsing records in a short time. OK Learn more
    10+
    10 Years of Experience
    50+
    50 + Countries Bussiness
    10000+
    10k + Diodes sold worldwide
    30+
    30+ Invention patent
    1
    1 Semiconductor Lab
    10
    10+ Advanced Optical Solutions
    Add : 288 Woodlands Loop #04-00, Singapore 738100 Email : info@ld-pd.com Tel : （+65)31638599 Fax : (+65)31588700 Copyright © 2012-2026 LD-PD PTE. LTD. All Rights Reverved  LD-PD PTE. LTD. is proud to be RoHS certified through SGS and ISO9001 certified through GIC.
    close[X]
    Your shopping cart
    Model Quantity Price Subtotal
    Total price：USD:
    View shopping cart Settlement
    ︿ TOP
    提示