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Home / Laser diode / Special Laser Diode / 785nm single frequency Narrow Linewidth Laser Diode

785nm single frequency Narrow Linewidth Laser Diode

The PL-NL series Fiber Bragg Grating laser is single frequency laser diode module designed for optical measurement and communication. The laser is packaged in 14-pin standard butterfly package with monitor photodiode and thermo-electric cooler (TEC).

Name Price Operation
785nm single frequency PM Narrow Linewidth Laser Diode $1950.00
785nm single frequency SM Narrow Linewidth Laser Diode $1750.00
Features

● Optical output: 20mW

● Narrow linewidth (Δν < 0.1MHz)

● Wavelength: 785nm @ 25℃

● SM or PM Fiber (ø0.9mm)

● FC-APC connector

● 14-pin butterfly package

● Internal monitor PD and TEC

● Low power consumption 

E/O Characteristics

Optical Characteristics (at 25 °C laser temperature)

Parameter

Symbol

Condition

Min.

Typical

Max.

Unit

Center Wavelength

λc

TL=1535 CW

785

790

795

nm

Peak Optical Output Power

PO

-


10

20

mW

Spectral linewidth

LW

-

-

75

100

KHz

Side-mode   Suppression Ratio

SMSR

CW

30

40

-

dB

Optical Isolation

-

-10 < TC < +70 ºC

30

-

-

dB

Polarization Extinction Ratio

ER

-

20

-

-

dB

Relative Intensity Noise

RIN

CW, output power 5mW

-

-

-135

dB

Wavelength drift with case (-10 to 70 ºC) temperature

λ

TL=1535

-

-

±30

pm

Wavelength Temperature   coefficient

Δλ/ΔT

TL=1535

-

65

80

pm/ºC

Wavelength Current   coefficient

Δλ/ΔΙ

-

-

1.0

2

pm/mA



Electrical Characteristics (at 25 °C laser temperature)

Parameter

Symbol

Condition

Min.

Typical

Max.

Unit

Threshold Current

ITH

-

-

25

40

mA

Slope Efficiency

ƞ

CW output power 30 mW

0.064

0.1

-

mW/mA

Operating current

Iop

CW

-

250

300

mA

TEC set temperature

Ts

-

15

-

35

Laser Forward Voltage

VF

CW output power 30 mW

-

1.3

2.5

V

Monitor Dark Current

ID

-

-

-

0.1

μA

Input Impedance

ZIN

-

22

25

28

Ω

Thermistor Current

ITC

-

10

-

100

μA

Thermistor Resistance

RTH

TL =   25 °C

9.5

10

10.5

TEC Current

ITEC

TL = 25 °C, TC = 70 °C

-

-

1.8

A

TEC Voltage

VTEC

TL = 25 °C, TC = 70 °C

-

-

3.5

V

TEC capacity

ΔT

Tc = 70

-

-

50

°C

Thermistor temperature

-

-

-

-

100

°C


Fiber Pigtail Specifications

5bc884ab3c4d8.png

MM.jpg

Note: The PM fiber and the connector key are aligned to the slow axis,fast axis is blocked.


Spectrum 

785.png

L-I Curve

7851.png

Package Size

9702.png

Pin definition

9703.png

 

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

250

300

Forward Voltage

V

0.8

1.2

1.8

TEC Current

A

-

1.2

1.4

Reverse VoltageLD

V

-

-

1.8

Application

● Laser interference experiment

● Drop-side of DWDM long-haul transport equipment

● Optical Test and Instrumentation

● Microwave Photonics

● CATV networks

● Sensors

OEM Info

PL-NL-□□□□-☆-A8▽-XX

□□□□:Wavelength

0633:633nm

0785:785nm

0790:790nm

0795:795nm

1050:1050nm

1550:1550nm

1555:1555nm

*****

1560:1560nm

☆ :Output Power

A:10mW

B:30mW

▽:Linewidth

1:<100KHZ

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