semiconductor laser

NegotiableUpdate on 02/10

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Overview

The semiconductor laser adopts a DFB laser with a quantum well structure, built-in semiconductor cooler, and standard packaging process to achieve butterfly tail fiber packaging, with a compact structure and small volume; Laser has won the trust of customers with stable power, wavelength, and high signal-to-noise ratio, and has been widely used in the field of fiber optic communication

Product Details

Semiconductor lasers use quantum well structuresDFB LaserBuilt in semiconductor cooler, standard packaging process realizes butterfly tail fiber packaging, compact structure, small volume; Laser has won the trust of customers with stable power, wavelength, and high signal-to-noise ratio, and has been widely used in the field of fiber optic communication. Under high-precision temperature control of semiconductor refrigerators, the advantages of high stability in laser power and wavelength make lasers widely used in the field of fiber optic sensors.

　　semiconductor laserRated ultimate working conditions:

parameter	symbol	parameter value	unit
Forward current of laser diode	If(LD)	100	mA
Reverse voltage of laser diode	Vr(LD)	2	V
Working current of backlight detector	If(PD)	2	mA
Backlight detector reverse voltage	Vr(PD)	20	V
Refrigerator working current	ITEC	2.4	A
Refrigerator working voltage	VTEC	2.9	V
Operating Temperature	Topr	-20~+70	℃
Storage temperature	Tstg	-40~+85	℃
Lead welding temperature/time	Tsld	260/10	℃/s

Technical Specifications:

parameter	symbol	test conditions	Min	Type	Max	unit
optical output power	PO	CW	3		10	mW
threshold current	Ith	CW	-	12	18	mA
operating current	Iop	CW,5mW	-	-	50	mA
Working Voltage	Vop	CW，5mW	-	1.5	2.0	V
slope efficiency	or	CW，5mW	0.05	0.1	-	mW/mA
peak wavelength	λp	CW, 5mW@25 ℃	λc-1	λc	λc+1	nm
Wavelength stability	λs	CW, 5mW@25 ℃	-0.1nm		+0.1	dB
side-mode suppression ratio	SMSR	CW,5mW	35	-	-	nm
Spectral width (20dB)	[UNK]965151λ	CW,5mW	-	0.2		nm/℃
Drift coefficient of wavelength with temperature variation	Ð965151;λ/T	Stable working current		0.1		nm/℃
Drift coefficient of wavelength with current variation	◎λ/I	Stable operating temperature		0.01		nm/mA
thermistor	Rth	Ttherm=25℃	9.5	10	10.5	kΩ

Gas absorption reference table:

gas composition	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