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    • 777nm DFB Laser Diode For CPT Application     


    The PL-DFB-777-A-A81 777nm 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.We built in isolator in butterfly package to Protection Against Optical Damage and improve Frequency and Power Stability.




    Product model


    Name Model Price
    777nm DFB PM Laser diode   [PDF]  [RFQ]

    PL-DFB-0777-A-A81-PA     		[Please inquire]
     Call us 
    777nm DFB SM Laser diode for Oxygen atom analysis   [PDF]  [RFQ]

    PL-DFB-0777-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

    776.0

    777.0

    778.0

    nm

    Side Mode Suppression Ratio

    SMSR

    40

    50

    70

    dB

    Isolation degree

    ISO

    28

    30


    dB

    Threshold Current

    Ith


    50

    70

    mA

    Operating Current

    Iop


    150

    250

    mA

    Power in fiber

    Pf

    30

    40

    80

    mW

    Quantum Efficiency

    η

    0.08

    0.12


    mW/mA

    Current Tuning Coefficient

    ∆λ/∆I


    0.001


    nm/mA

    Temperature Tuning Coefficient

    ∆λ/∆T


    0.06


    nm/°C

    Forward Voltage

    Vf


    1.3

    2

    V

    Thermistor Resistance

    RT

    9.5

    10

    10.5

    KΩ

    Thermistor Temp. Coefficient



    -4.4


    %/°C

    Fiber+Connector

    HI780+FC/APC/PM780+FC/APC



    Spectrum

    777.png


    DFB Linewidth Testing Result(≈734kHZ)

    777.1.png


    L-I Curve

    777.2.png


    Wavelength Tunability

    7dd46ca15afa0d7ccb0d80e4e68d9a1f.jpeg


    Package Size

    777.3.png

    Pin definition

    -56e5388b18cfc12b_副本.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 (–)

    Note:

    In the description for Above Table 1/10/11/14, the letters indicate the polarity of the electronic component, while the symbols in parentheses indicate the polarity of the external power supply.

    The MPD operates under negative voltage; therefore, the MPD polarity is opposite to the external power supply polarity.


    Absolute  Maximum Ratings

    Item

    Unit

    Min

    Typ

    Max

    Case Temperature

    ℃

    -5

    25

    70

    Chip Temperature

    ℃

    +10

    25

    40

    Operating Current

    mA

    0

    150

    250

    Forward Voltage

    V

    0.8

    1.2

    2.1

    TEC Current

    A

    -

    1.2

    1.2

    Reverse Voltage（LD）

    V

    -

    -

    2.0

    Reverse Voltage(PD)

    V

    -

    -

    20

    Application

    ● Tunable diode laser absorption spectroscopy

    ● CPT Application

    Ordering Info

    PL-DFB-□□□□-☆-A8▽-XX

    □□□□：Wavelength

    777: 777.0nm

    1270: 1270nm

    1532: 1532nm

    1392: 1392nm

    1512: 1512nm

    1567: 1567nm

    *****

    1653.7: 1653.7nm

    ☆: Output Power

    A: 30mW

    B: 50mW

    ▽: Wavelength Tolerance

    1: ±1nm

    2: ±2nm

    XX: Fiber and Connector Type

    SA=HI780+ FC/APC

    SP=HI780+ FC/PC

    PP=PM 850Fiber+ FC/PC

    PA=PM 850Fiber+ FC/APC



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