Special Laser for Gas Detection
Features

Imported quantum well structure(OMQs) DFB semiconductor laser chip

Applications

Production and testing of passive component for Gas detection

Product Consultation
Detailed information

Special Laser for Gas Detection

Temperature controlled pigtail laser series, using quantum well structure DFB laser, built-in semiconductor refrigeration, advanced laser welding process to achieve butterfly tail fiber packaging, compact structure, small volume, widely used in the field of optical fiber communication; Due to the advantages of high power and wavelength stability under high precision temperature control of semiconductor refrigeration, laser is widely used in the field of optical fiber sensor.

Features

  • Imported quantum well structure(OMQs) DFB semiconductor laser chip

  • Stable wavelength

  • High output power

  • hermetic package

  • Packaging:BF14 Pigtail type,TF8 space type,TO39 and other customized

Applications
  • Fiber optic Gas detection system
  • Production and testing of passive component for Gas detection

Rated limit operating conditions

参 数

Parameters

符号

Symbol

参数值

Value

单 位

Unit

激光二极管正向电流

Forward current of laser diode

If(LD)

100

mA

激光二极管反向电压

Reverse voltage of laser diode

Vr(LD)

2

V

背光探测器工作电流

Operating current of backlight detector

If(PD)

2

mA

背光探测器反向电压

Operating voltage of backlight detector

Vr(PD)

20

V

致冷器工作电流

Operating current of refrigerator

ITEC

2.4

A

致冷器工作电压

Operating voltage of refrigerator

VTEC

2.9

V

工作温度

Operating temperature

Topr

-20~+70

储存温度

Storage temperature

Tstg

-40~+85

引线焊接温度/时间

Lead welding temperature/time

Tsld

260/10

℃/s


〖Technical parameter:(Test environment temperature is 25℃)〗

参数

Parameters

符号

Symbol

测试条件

Condition

最小值

Min.

典型值

Typ.

最大值

Max.

单位

Unit

出光功率

Parameters

PO

CW

3

 

10

mW

阈值电流

Optical power

Ith

CW

12

18

mA

工作电流

Threshold current

Iop

CW, 5mW

-

100

mA

工作电压

Operating current

Vop

CW, 5mW

1.5

2.0

V

斜率效率

Slope efficiency

η

CW, 5mW

0.05

0.1

mW/mA

峰值波长

Peak wavelength

λp

CW, 5mW@25℃

λc -1

λc

λc+ 1

nm

波长稳定度

Wavelength stability

λs

CW,5mW@25℃

-0.1nm

 

+0.1

dB

边模抑制比

Side mode suppression ratio

SMSR

CW, 5mW

35

nm

光谱宽度(20dB)

Spectral width(20dB

∆λ

CW, 5mW

0.2

 

nm/℃

波长随温度变化漂移系数

Wavelength drift coefficient with temperature

Δλ/T

稳定工作电流Steady operating current

 

0.1

 

nm/℃

波长随电流变化漂移系数

Wavelength drift coefficient with current

Δλ/I

稳定工作温度Steady operating temperature

 

0.01

 

nm/mA

热敏电阻

Thermistor

Rth

Ttherm = 25ºC

9.5

10

10.5

kΩ

Attention:

In gas detection, according to the absorption spectrum data provided by HITRAN, there are usually several absorption peaks for the same gas. Customers should choose the best center wavelength location according to their own system needs.


Gas absorption reference table

气体成分

Gas component

吸收波长

Absorption wavelength

O2

761nm、764nm (VCSEL)

HF

1268.7nm、1273nm、1278nm

H2O

1368.59nm、1392nm

NH3

1512nm

C2H2

1532.68nm

CO

1567nm

H2S

1578nm

Co2

1580nm、2.0um

C2H4

1620nm、1627nm

CH4

1647nm、1650.9nm、1653.7nm、1660nm

HCl

1742nm


External dimensions


ordering information

波长

Wavelength

功率

Power

尾纤长度

fiber length

管脚定义

Pin definition

连接头形式

Connector

工作温度

operation temperature

可选或其他

Optional or other

3-10mW

1M

Others

S型或N型

S-type or N-type

0=None

1=FC/APC

2=FC/UPC

3=SC/APC

4=SC/PC

Others

 

23~25℃

Others




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