1945nm DFB Tunable Laser diode


The PL-DFB-1945-A-A81 1945nm 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
1945nm DFB PM Laser diode   [PDF]  [RFQ]

PL-DFB-1945-A-A81-PA
Stock NO.: A80012444
[Please inquire]
1945nm DFB SM Laser diod5   [PDF]  [RFQ]

PL-DFB-1945-A-A81-SA
Stock NO.: A80012443
[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

1944

1945

1946

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

5TAAX2L[P`Z525UUO8Z8YG1_副本.jpg

Tuning Characteristics

~I`BJ1%D(`)G2%V{`YNAYEE_副本.jpg

DFB Linewidth Testing Result

PT Linewidth.jpg


L-I Curve

QLB0VUY29O4A4)H4SMXM~32_副本.jpg


Power Stability

%)LDF`X4NYV5945LZBZZENX_副本.png


Beam Quality

D)XRNI6(B736%L%HB68S3.jpg    

2D 


 ZUYY5)4Z332N5V9_ZJ`JF.png

3D


Camera Analysis 

89A31A99B922B0A5004C93A98748FF54.png


Package Size

pk.png

Pin definition

1370.jpg


1

Thermistor

8

Case Ground

2

Thermistor

9

 Case Ground

3

Laser dc Bias   (Cathode) (–)

10

Case Ground

4

PD Monitor Anode   (-)

11

Laser Anode (+)

5

PD Monitor Cathode   (+)

12

RF Laser Input   Cathode (–)

6

Thermoelectric Cooler (+)

13

Laser Anode (+)

7

Thermoelectric Cooler (–)

14

Case Ground


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

● Gas Monitoring

Ordering Info

PL-DFB-□□□□-☆-A8▽-XX

□□□□:Wavelength

1512:1512nm

*****

1653.7: 1653.7nm

1947: 1947nm

☆ :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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