DFB

The PL-DFB-850-A-A81 850nm 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 special design the area only work in room Temperature. Our diode has good performance from 20-30℃.

Product model

850nm DFB SM Laser diode

PL-DFB-850-A-A81-SA

Central wavelength 850nm, Output power 20mW, Narrow Linewidth < 2MHz, Tolerance ±1nm, HI780, FC/APC，without isolator

Central wavelength: 850nm

Output power: 20mW

Package: 14pin - BF

850nm DFB PM Laser diode

PL-DFB-850-A-A81-PA

Central wavelength 850nm, Output power 20mW, Narrow Linewidth < 2MHz, Tolerance ±1nm, PM850 Fiber, FC/APC

Central wavelength: 850nm

Output power: 20mW

Package: 14pin - BF

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

Tsub=25°C, CW bias unless stated otherwise

Parameter	Symbol	Min	Typ	Max	Unit
Centre Wavelength	λ	849.5	850.0	850.5	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	10	20	30	mW
Quantum Efficiency	η	0.08	0.22	0.25	mW/mA
Current Tuning Coefficient	∆λ/∆I	0.001	0.002	0.006	nm/mA
Temperature Tuning Coefficient	∆λ/∆T		0.05		nm/K
Forward Voltage	Vf		1.3	2	V
Thermistor Resistance	RT	9.5	10	10.5	KΩ
Thermistor Temp. Coefficient			-4.4		%/°C
Connector	FC/APC

Spectrum

L-I Curve

E]W7.png

Tuning characteristics

DFB Linewidth Testing Result

PT Linewidth.jpg

Beam Quality

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3D

Package Size

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 (–)

Absolute Maximum Ratings

Item	Unit	Min	Typ	Max
Case Temperature	℃	-5	25	70
Chip Temperature	℃	+10	25	40
Operating Current	mA	0	180	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

● Seed laser

● Fiber laser

Ordering Info

PL-DFB-□□□□-☆-A8▽-XX

□□□□: Wavelength

850: 850nm

1392: 1392nm

1512: 1512nm

1567: 1567nm

*****

1653.7: 1653.7nm

☆ : Output Power

A: 20mW

B: 50mW

▽: Wavelength Tolerance

1: ±1nm

2: ±2nm

XX: Fiber and Connector Type

SA=HI780+ FC/APC

SP=HI780+ FC/PC

PA=PM980 Fiber+ FC/APC

PP=PM980 Fiber+ FC/PC

852nm Low Cost DFB Laser Diode (Operation At Room Temperature) 828nm DFB Laser Diode For Seed Laser

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850nm DFB Laser Diode For Seed Laser

Product model

Parameter