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Laser Cleaning Laser Module

VCSEL array VS traditional Laser Bar

Parameters	VCSEL	LD Bar	VCSEL Advantages
EO efficiency	40%-50%	50%-60%
Spectrum width	~1nm	~3nm	Narrow spectrum
Wavelength-temperature coefficient	0.07nm/K	0.3nm/K	Insensitive to temperature
Long time wavelength shift	No	Yes	Stable over time
Optical damage threshold	No COD	Terrible COD	High damage threshold
Direct heat conductive area	Large	Small	Easy for heat remove
Heat stress during pulsing	Low	High	Very good at pulsed operation
Max operation temperature	>85℃	30~45℃	High temperature operation
Current inrush sensitivity	Insensitive	Very Sensitive	Very robust to driver
Voltage-current relation	Linear	Nonlinear	Simple driver design
Pulsed life time(200us)	>20G shots	1-2G shots	10 times longer life time
Power degradation	Near- Linear	Nonlinear	Life time can be expected
Manufacture cost	Low	High	Very low cost

 

Model No.	S755A	S808A	S1064A
Wavelength	755nm	808nm	1064nm
Optical Power1 (CW)	30W	50W	40W
Optical Power2 (250us, 10Hz)		200W
Optical Power3 (250us, 100Hz)		150W
Optical Power4 (250us, 1KHz)		70W
Optical Power5 (20ms, 10Hz)		60W
Optical Power	30W CW	50W CW	40W CW
Central Wavelength	+/-10nm	+/-3nm	+/-10nm
Spectrum Width	<3nm	<1.2nm	<3nm
Emitter Size	4.8x4.8mm	4.8x4.8mm	4.8x4.8mm
Divergence (FWHM)	250mrad	250mrad	250mrad
Operation Current (CW)	50A	58A	50A
Operation Voltage (CW)	2.0V	2.1V	1.8V
Threshold Current	10A	10A	10A
EO Efficiency	~30%	~43%	~45%
Max Operation Temperature	85°C	85°C	85°C

 

VCSEL-pumped gain module

For QCW DPSSL gain module gain distribution, pumping efficiency and life time are three most important indices. The gain distribution has two effects on beam quality. On one hand the energy density distribution sets the distribution of the gain and the nonuniform gain distribution result in changes of intensity distribution in near field; On the other hand thermal effect in the gain medium cannot be ignored at high frequency. Uniform energy density means uniform heat density and the wave-front distortion is parabolic, which can be regarded as a lens and compensated easily.
While nonuniform energy density results in high order distortion which is hard compensated for and reduces the focusing ability of the beam. In multi-pass amplifier these effects come worse.

 

Based on several-year efforts on DPSSL gain module and our VCSEL technology, Laserconn can provide DPSSL gain module with uniform gain distribution, high pumping efficiency and a long life time. We have two types of gain module, namely water-cooled cylindrical gain module and all solid state gain module. We also provide customized gain module.

 

Water-cooled cylindrical gain module

Item	Parameter
Repetition rate	1~1000Hz
Pump power	1~27KW
Pulse width	200~300us
Rod diameter	2~15mm
Cooling	Water cooling
Wavelength	806nm +/- 3nm
Linewidth(FWHM)	4 nm
Size	Can be customized

 

 

 

 

 

Model No.	Nd:YAG Aperture(mm)	SLD chips	Pump Power @200us,100Hz	Pulse Energy
SLD-3x3-3	φ3	9	1350W	>108 mJ
SLD-3x5-3	Φ3	15	2250W	>180 mJ
SLD-3x7-3	Φ3	21	3150W	>252 mJ
SLD-3x6-4	Φ4	18	2700W	>216 mJ
SLD-3x10-4	Φ4	30	4500W	>360 mJ
SLD-5x7-6	Φ6	35	5250W	>420 mJ
SLD-5x9-6	Φ6	45	6750W	>540 mJ
SLD-5x10-6	Φ6	50	7500W	>600 mJ
SLD-5x15-6	Φ6	75	11250W	>900 mJ
SLD-5x7-8	Φ8	35	5250W	>420 mJ
SLD-5x9-8	Φ8	45	6750W	>540 mJ
SLD-5x13-8	φ8	65	9750W	>780 mJ
SLD-7X6-10	Φ10	42	6300W	>504 mJ
SLD-7x11-10	Φ10	77	11550W	>924 mJ
SLD-7x15-10	Φ10	105	15750W	>1260 mJ
SLD-7x10-12	Φ12	70	10500W	>840 mJ
SLD-7x15-12	Φ12	105	15750W	>1260 mJ
SLD-9x10-12	Φ12	90	13500W	>1080 mJ
SLD-9x15-12	Φ12	135	20250W	>1620 mJ
SLD-9X10-15	Φ15	90	13500W	>1080 mJ
SLD-10x14- 15	Φ15	140	21000W	>1680 mJ

 

All solid state gain module

	V2	V4
Repetition rate	50 Hz
Pump Power	300W@50Hz	600W@50Hz
	400W@50Hz	800W@50Hz
Pulse width	200us
Rod aperture	2~4mm
Cooling	Conduction
Wavelength	808nm +/- 0.5nm
Linewidth(FWHM)	1.2nm
Size	20mm×42mm×17mm	20mm×45mm×30mm