1947nm DFB Tunable Laser diode(TO39 Package)


The PL-DFB-1947-A-A81 1947nm 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 TO39 package with TEC and PD Built in.



Product model


Name Model Price
1947nm DFB SM Laser diode(TO39)   [PDF]  [RFQ]

PL-DFB-1947-A-A81-TO39
Stock NO.: A80011290
[Please inquire]


Parameter



Features

● Narrow Linewidth < 2MHz

● Excellent wavelength control and stability

● Industry Standard TO39 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

1946

1947

1948

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


Spectrum

2345截图20210922153717.png


L-I Curve

1950.0.png

Tuning Characteristics

2345截图20210922153755.png

DFB Linewidth Testing Result

3F}3~5GMTW8F9$)8_GB@VSG.png


Central Wavelength

ABE6E92421C5CB24197C03A141B2D972_副本.jpg


Wavelength Stability

F1A4CA241AFD91EE5D82B2E37D3F6A66.png


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

Dimensions and Pin definitions

Uinte(mm)

t3.jpg


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▽-TO39

□□□□:Wavelength

1530: 1530nm

1653.7: 1653.7nm

*****

1950: 1950nm

☆ :Output Power

A:2mW

B:5mW

▽:Wavelength Tolerance

1:±1nm

2:±2nm



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