1850nm DFB Laser Diode for Seed laser


The PL-DFB-1850-A-A81 1850nm 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
1850nm DFB PM Laser diode   [PDF]  [RFQ]

PL-DFB-1850-A-A81-PA
Stock NO.: A80012428
[Please inquire]
1850nm DFB SM Laser diode   [PDF]  [RFQ]

PL-DFB-1850-A-A81-SA
Stock NO.: A80012427
[Please inquire]


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

1849

1850

1851

nm

Side Mode Suppression Ratio

SMSR

30

40


dB

Threshold Current

Ith


20

30

mA

Operating Current

Iop


80

120

mA

Chip output Power

Pf

2

3

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

Thermistor Temp. Coefficient



-4.4


%/°C

Connector

FC/APC


Spectrum

826144D36159A9A3F3E1B7F69E0ECF81 (1).png


L-I Curve

1950.0.png


Tuning Characteristics

10A1CF11C737B21BBD74E3BF9FAF7149 (1).png

DFB Linewidth Testing Result

PT Linewidth.jpg


Wavelength Stability

%@~D0)DOZ}[~RCI6$VS$Z]R.png


Beam Quality

D)XRNI6(B736%L%HB68S3.jpg    

2D 


 ZUYY5)4Z332N5V9_ZJ`JF.png

3D

Package Size

5b4c1479a5012.png

Pin definition

GUGGDL(4GHO1@%_{H_OZB]I.jpg

Pin Connection

PIN#

Function

PIN#

Function

1

Thermistor

8

Case Ground

2

Thermistor

9

Case Ground

3

Laser Cathode (-)

10

NC

4

NC

11

Laser Anode (+)

5

NC

12

Laser Cathode (-)

6

TEC (+)

13

Laser Anode (+)

7

TEC (-)

14

NC


 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 VoltageLD

V

-

-

2.0

Reverse Voltage(PD)

V

-

-

20

Application

● Tunable diode laser absorption spectroscopy

● CH4 Monitoring

Ordering Info

PL-DFB-□□□□-☆-A8▽-XX

□□□□: Wavelength

1512: 1512nm

*****

1653.7: 1653.7nm

1850: 1850nm

☆ : Output Power

A: 2mW

B: 5mW

▽: 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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