DFB

The PL-DFB-780-A-A81 780nm 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

780nm DFB PM Laser diode With isolator

PL-DFB-0780-A-A81-PA

Central wavelength 780nm, Output power ＞7mW, Narrow Linewidth < 2MHz, Tolerance ±1nm, PM 780Fiber, FC/APC, With isolator

Central wavelength: 780nm

Output power: 7mW

Package: 14pin - BF

780nm DFB SM Laser diode

PL-DFB-0780-B-A81-SA-WOI

Central wavelength 780nm, Output power 30mW, Narrow Linewidth < 2MHz, Tolerance ±1nm, HI780, Without isolator, FC/APC

Central wavelength: 780nm

Output power: 30mW

Package: 14pin - BF

780nm DFB PM Laser diode

PL-DFB-0780-B-A81-PA-WOI

Central wavelength 780nm, Output power 30mW, Narrow Linewidth < 2MHz, Tolerance ±1nm, PM 850Fiber, Without isolator, FC/APC

Central wavelength: 780nm

Output power: 30mW

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

Electrical/Optical Characteristics (Tsub=25°C, CW bias unless stated otherwise)

Parameter	Symbol	Min	Typ	Max	Unit
Centre Wavelength	λ	779.0	780.0	781.0	nm
Side Mode Suppression Ratio	SMSR	30	40		dB
Threshold Current	Ith		45	50	mA
Operating Current	Iop		150	250	mA
Chip output Power	Pf	20	35	50	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	KΩ
Thermistor Temp. Coefficient			-4.4		%/°C
Fiber+Connector	HI780+FC/APC

Spectrum

Tuning Characteristics

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DFB Linewidth Testing Result

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L-I Curve

Rin Level Test Results

Package Size

Pin definition

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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	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

780: 780.0nm

1270: 1270nm

1532: 1532nm

1392: 1392nm

1512: 1512nm

1567: 1567nm

*****

1653.7: 1653.7nm

☆: Output Power

A: 7mW

B: 30mW

C: 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

Tunable 780nm DFB Laser(14Pin Butterfly Free Space Collimated Output) 777nm DFB Laser Diode For CPT Application

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780nm DFB 14Pin Butterfly Laser Diode

Product model

Parameter