Imported quantum well structure(OMQs) DFB semiconductor laser chip
Production and testing of passive component for Gas detection
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
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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