Low noise all solid state 532nm green laser is made features of high output power stability, good beam profile, ultra compact, long lifetime, low cost and easy operating, which is widely used in collimation, laser medical treatment, scientific experiment, optical instrument, etc.
Wavelength(nm) : 532
Output power (mW) : 250
Transverse mode : TEM00
spectral line width : 0.1nm
coherence length : 2m
Noise of amplitude (rms, 1~20MHz) : <1%
Operating mode : CW
Power stability (rms, over 4 hours) at 25 : <1%
Warm-up time (minutes) : <10
M2 factor : <1.2
Beam divergence, full angle (mrad) : <1.5
Beam diameter at the aperture (mm) : ~2.0
Beam height from base plate (mm) : 27. 4
Polarization ratio : >100:1 (0 or 90 degree)
Pointing stability after warm-up (mrad) : <0.05
Operating temperature (C) : 10~35
Power supply (90-264VAC) : PSU-H-FDA
Expected lifetime (hours) : 10000
Warranty : 1 year
Laser Noise
Here we discuss where such noise can come from, how it is quantified and how its influences can be minimized. Noise of lasers is a short term for random fluctuations of various output parameters.
The noise issues of lasers are due to the competition of mode in laser resonant cavity, which lead to high frequency jitter of output power. Through special design for laser resonant cavity and other components, the laser amplitude noise can be reduce efficiently.
What are the different types of laser noise?
In a single-frequency laser, there are intensity noise (or amplitude noise) and phase noise. The latter causes a finite laser linewidth, and is strongly related to frequency noise.
Reduction of laser intensity noise over 1 MHz band for single atom trapping .
We reduce the intensity noise of laser light by using an electro-optic modulator and acousto-optic modulator in series. The electro-optic modulator reduces noise at high frequency (10 kHz to 1 MHz), while the acousto-optic modulator sets the average power of the light and reduces noise at low frequency (up to 10 kHz).
