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Green Problem

Sapphire-Advantage-Low-Noise.pdf

Sapphire-Advantage-Low-Noise.pdf

…instability phenomenon is called
the "green problem," [ref 1] since the first commercial
CW lasers using intra-cavity doubling were green
DPSS lasers, where the laser fundamental at
1064 nm is frequency-doubled to generate green
output at 532 nm. Of course, this can…

COHR WP OPSL No Green Noise final 5.15.18.pdf

COHR WP OPSL No Green Noise final 5.15.18.pdf

…nanosecond lasers produced by
Coherent for precision materials processing applications. But with CW operation, the green
noise problem manifests as a UV problem with increased severity because the tripling efficiency
is determined by the third power of the focused intensity. For…

Verdi G-Series

Verdi G-Series

…due to the ultra-thin gain medium (i.e. no thermal lensing issues). In addition, the short upper-state lifetime of the OPS chip removes the “green noise” problem as seen with sum frequency generated (SFG) noise in multi-longitudinal mode DPSS lasers. Single longitudinal mode options are available up…

Verdi V-Series

Verdi V-Series

…Benefits The Verdi V-Series has a patented single longitudinal mode ring cavity architecture enabling single frequency applications. The “green noise” problem, common in other pump lasers, is eliminated with this design. Additionally, the Verdi V is available with a PZT option to lock the frequency…

Microelectronics

Microelectronics

…Furthermore, the various wet/dry cycles involved in traditional chemistry can cause shrinkage and deformation, limiting resolution and/or yields. This problem is no longer an issue with this new, single-step dry process. Related Products LAMBDA SX LEAP Pulsed Laser Deposition Short and intense laser…

Graphic Arts & Display

Graphic Arts & Display

…true color/white images) by use of wavelength-optimized red, green and blue Taipan laser modules. And just as important, Taipan lasers provide high reliability ensuring the show goes off flawlessly with not a single laser having any problem. Plus, the combination of reliability and remote hands-free…

Sapphire-Advantages-Summary.pdf

Sapphire-Advantages-Summary.pdf

…data quality.
How? OPSLs do not suffer from the "green noise
problem" present in many DPSS lasers.
In other intracavity doubled solid-state lasers (e.g.
DPSS), a noise-generating phenomenon called the
"green problem" causes chaotic mode dynamic
fluctuations which limit…

Verdi-G-Series-Lasers-Technology-Proven-in-the-Most-Noise-Sensitive-Applications.pdf

Verdi-G-Series-Lasers-Technology-Proven-in-the-Most-Noise-Sensitive-Applications.pdf

…frequency doubling. However, many of the
earlier DPSS lasers suffer from output noise due to a
phenomenon called "green noise," or the "green
problem."
Figure 2. With DPSS lasers operating on multiple
longitudinal modes, intracavity doubling causes chaotic
mode…

Vitara Preinstall.book

Vitara Preinstall.book

…extremely low noise are characteristics of OPSL lasers. In addition,
the short upper-state lifetime of the OPS chip removes the "green
noise" problem as seen in diode pumped solid-state (DPSS) lasers.
Verdi G-Series lasers are available as single or multi-transverse
mode.

2016-Ultrafast-Laser-Systems-Catalog.pdf

2016-Ultrafast-Laser-Systems-Catalog.pdf

…& Performance · www.Coherent.com · tech.sales@coherent.com
6
Verdi G-Series
Low-Noise, Green Pump Lasers
The Verdi G-Series is a revolutionary green pump laser
that uses a semiconductor chip as the active medium
in place of a conventional laser crystal.This…

COHR RLScatalog 2017revA web.pdf

COHR RLScatalog 2017revA web.pdf

…& Performance · www.Coherent.com · tech.sales@coherent.com
6
Verdi G-Series
Low-Noise, Green Pump Lasers
The Verdi G-Series is a revolutionary green pump laser
that uses a semiconductor chip as the active medium
in place of a conventional laser crystal.This…

Advances in Diode Lasers and OPSLs

Advances in Diode Lasers and OPSLs

…efficient nonlinear
harmonic generation
· Excellent beam and mode quality
· High power stability & low noise
· No "green problem"
· No thermal lensing
· Fiber coupling with high efficiency
· High reliability & lifetime due to
semiconductor design…

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