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Gain Chip

Advances in Diode Lasers and OPSLs

Advances in Diode Lasers and OPSLs

gain chip drastically reduces the demands on the pump
geometry, one of the attributes allowing the power of
OPSL technology to be scaled from the milliwatt to
multi-watt range. Efficient rear-surface cooling of the
chip also means that there is no thermal lensing in the
gain

Verdi G-Series

Verdi G-Series

…the rod-based gain medium is replaced with a robust and versatile semiconductor chip. OPSL output power can be changed without affecting beam parameters 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…

Photonik Feb2014.pdf

Photonik Feb2014.pdf

…single chip.
In order to effectively increase the package density, the reduction along the lateral dimensions must not be gained at the
expense of the vertical device dimensions
as exemplified in figure4. From a manufacturer`s perspective, this means that
individual chips, and…

Bio Photonics - July/August 2017

Bio Photonics - July/August 2017

…is an old
technology, with only small, incremental
improvements occurring. Automated,
easy-to-use box types of confocal are
gaining popularity as they solve the complexity issue that has plagued traditional
confocal systems. Ongoing improvement
of scientific-grade…

Sapphire-Advantages-Summary.pdf

Sapphire-Advantages-Summary.pdf

…powers
up to 300 mW. Output powers of up to 500 mW can be
reached with slightly larger Sapphire HP models. Plus
the thin (10 µm) gain chip is effectively cooled from its
rear surface and does not create a thermal lens.
Together, this enables the power of any Sapphire laser…

Microelectronics

Microelectronics

…advanced chip architectures. As silicon wafers get thinner and new material layers are added, lasers are playing a critical role in processing these wafers. As wafers get thinner, they become more difficult to process with traditional saws due to increased cracking and chipping. DPSS UV lasers…

COHR WP  OPSL Invariant Beam Properties final 5.3.18.pdf

COHR WP OPSL Invariant Beam Properties final 5.3.18.pdf

…of this test rig with a heated mirror in place of the OPSL gain
chip showed it could discern wavelength distortions as small as /50 at the 980 nm test
wavelength.
Figure 2. The optical performance of the OPSL gain chip was tested by incorporating it within a MachZehnder interferometer…

COHR WP OPSL Superior Reliability 5.30.18.pdf

COHR WP OPSL Superior Reliability 5.30.18.pdf

…the initial electrical power to optical power conversion. The
OPSL utilizes a near infrared InGaAs gain chip. One of the advantages of this arrangement is that
this gain chip is optimally pumped by 808 nm light. This enables the use of gallium arsenide
(GaAs) based pump diodes.…

COHR WP OPSL Wavelength Flexibility final 4.17.18.pdf

COHR WP OPSL Wavelength Flexibility final 4.17.18.pdf

…diode lasers, including the OPS chip. First of all, this gain chip can
emit light over a broader spread of wavelengths compared to lasers based on atomic emission
such as an argon ion laser. Moreover, the center wavelength varies slightly from chip to chip,
which of course is why…

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

…of the pump diode,
increasing the area of the OPSL gain chip, and for
future higher power, even increasing the number of
pump diodes. Moreover, none of these necessitate
complex or sensitive alignment because the OPSL chip
is so thin (< 10 microns), thus matching the pump…

Bio Photonics - April 2015

Bio Photonics - April 2015

…for any
arbitrary output wavelength across much
of the visible and near-UV spectrum,
merely by tweaking the design of the gain
semiconductor chip. For example, new
lasers at 588 and 594 nm were recently
introduced for exciting orange fluorophores. Other models at 550 nm…

Microsoft Word - PW09 7198-38 Leisher Copyright.doc

Microsoft Word - PW09 7198-38 Leisher Copyright.doc

…optical gain spectrum of the
active region. Standard broad area diode lasers do not employ wavelength-selective feedback or longitudinal mode
suppression mechanisms, resulting in lasing on any and all modes which experience sufficient round-trip gain within the
spectral gain bandwidth…

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