850nm butterfly high-speed modulated VCSEL laser 0.1mW polarization-maintaining output

Idealphotonics's 850 nm single-mode VCSELs are ideal for demanding sensing applications due to their optimized optical properties. The innovative chip design suppresses high-order longitudinal and transverse modes while providing linear polarization stability.

Product features：Internal TEC and thermistor、 2 nm TEC tunability、 Gaussian beam profile The absolutely symmetrical Gaussian beam profile significantly simplifies the application optical design、 Small beam divergence, with a range of 20° (1/e2) and reproducible divergence angle, facilitates laser beam guidance、 Narrow spectral width, with a laser line with a spectral width of typically 100 MHz, these lasers are designed for spectroscopy applications、 Low power consumption, with a power consumption of only a few milliwatts, battery operation is possible in mobile applications、 TO46&TEC、 Specific operating conditions: Laser current IOP = 2 mA Target wavelength λ t = 850 nm @ TOP (adjusted by TEC)

Application area：CPT atomic clock、 Optical coherence experiments

Unit Price

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Part Number

PL-VCSEL-0850-1-1-PA-14BF

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General Parameters

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Dimensional Drawing

Parameter

Parameter	Symbol	Condition	Min.	Typical	Max.	Unit
Optical power Power	P	—	0.1	—	—	mW
Threshold current	I_TH	CW,T_L=25℃	1	3	5	mA
Drive current	I_Op	P_O =0.1mW	—	5	8	mA
Laser forward voltage	V_LF	P_O=0.1mW	—	—	2.3	V
Photoelectric efficiency	η	CW,T_L=25℃	0.2	0.4	0.65	mW/m A
Laser TEC control temperature (ambient temperature 25℃)	T_LD	—	15	—	35	℃
Thermistor current	I_TC	—	10	—	100	µA
Thermistor impedance	R_TH	T_L=25℃	9.5	—	10.5	kΩ
Cooler current	I_TEC	T_L=25℃, T_around =70℃	—	—	1.2	A
Cooler voltage	V_TEC	T_L =25℃, T_around =70℃	—	—	3.5	V

Fiber and connector

Parameter	Symbol	Describe	Min.	Typical	Max.	Unit
Pigtail length	L	Nufern PM 780-HP	0.98	_	3.5	m
Connector type	_	FP/APC	_	_	3.5	_

Optical characteristic

Parameter	Symbol	Describe	Min.	Typical	Max.	Unit
wavelength	L	CW TLD=25~35℃	840	850	860	nm
SMSR	_	CW	10	_	_	dB
Extinction ratio	ER	I_F=5mA Polarization II slow axis	18	20	_	dB

Absolute Maximum

Parameter	Symbol	Min.	Max.	Unit
Laser reverse voltage	VRLMAX	—	8.0	V
Forward current	I_FLMAX	—	8.0	mA
Operating temperature range	T_O	5	45	℃
Storage temperature range	T_stg	-40	85	℃
Thermistor temperature	—	—	100	℃
Cooler operating current	—	—	1.9	A

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Spectrum

High-order modes are strongly suppressed and the spectral bandwidth is extremely narrow

Beam profile

The far-field light intensity distribution of a single-mode VCSEL is completely consistent with the Gaussian model

LIVT characteristic curves

You will benefit from linear performance over a wide temperature range and low threshold current

Pin definition

1	Thermoelectric Cooler (+)	8	N/C
2	Thermistor	9	N/C
3	PD Monitor Anode (-) optional	10	laser Anode (+)
4	PD Monitor Cathode (+) optional	11	Laser Cathode (–)
5	Thermistor	12	N/C
6	N/C	13	Case Ground
7	N/C	14	Thermoelectric Cooler (–)

A. Model: VCSEL850-SM-BF-PM

Description:

Center wavelength: 850nm, wavelength deviation: ±10nm, output power: >0.1mw, 14pin butterfly package, polarization-maintaining output

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