…modularity which will simplify their operation.
We also support numerous other industrial and research applications,
including Fiber Bragg Grating (FBG)
writing and Pulsed Laser Deposition
(PLD). The latter is a unique method
for producing high quality thin films,
…embedded Yb ions,
which re-emit with nearly 100 percent
Here, they use a laser diode controlled
by a fiber Bragg grating (FBG) tuned so
that the narrowband excitation light is
red-shifted from the absorption line center. The long excited-state lifetime of…
…of the application.
1. P. Mills et al., "Single mode operation of 1.55 mm semiconductor lasers using a volume holographic grating,"
Electronics Letters, 21:15, 1985.
2. US pat. 5,691,989, G. Rakuljic et al., 1997.
3. B.L. Volodin et. al., Wavelength Stabilization…
…by Coherent/Rofin. The
laser resonator is formed by a large mode
area (LMA), Yb-doped, double-clad optical fiber and fiber Bragg gratings (FBG)
for resonator mirrors. This is pumped
from each end by a series of diode laser
pump modules, whose outputs are fibercoupled…
Laser Focus World www.laserfocusworld.com January 2015
the volume Bragg gratings that narrow
the spectral line of the diode laser to a
range that is useful for the particular application, custom package design that
permits tunability of the spectral line
Coherent | Rofin. The laser resonator is formed by a large mode area (LMA), Yb-doped,
double clad optical fiber and fiber Bragg gratings for resonator mirrors. This is pumped
from each end by a series of diode laser pump modules, whose outputs are fiber coupled
…volume in one of our ISO 13485
certified plants. In addition, many of the fiber components offered in the broader market, such as Fiber
Bragg Gratings and Fiber Combiners, have Coherent fiber in them.
Gas lasers (CO, CO2
, Excimer, Ion)
The breadth of our gas laser portfolio…
…Moser, and F. Havermeyer, "Volume holographic grating wavelength stabilized laser diodes," IEEE J. Sel. Top. Quant. 13(3), 672-678 (2007). 16. O. M. Efimov, L. B. Glebov, L. N. Glebova, K. C. Richardson, and V. I. Smirnov, "High-efficiency bragg gratings in photothermorefractive glass," Appl. Opt.…
condition. In the wave-vector space (K-sphere) diagram, this means kP
, and kD
form a closed triangle as shown in
Figure 1. We call the quantity kz
the Bragg mismatch factor, which can be caused by angular or wavelength detuning
from the Bragg…
…normal to the VHG, a misalignment of the VHG (i.e a change in the grating vector direction) by several degrees is automatically compensated by a different cone direction. For a typical VHG with a thickness of 0.5 mm and Bragg wavelength of 405 nm, the FWHM angle selectivity is a cone subtending…
…Wavelength Variation (within filter) nm 0.2 Bandwidth2 (FWHM) nm 0.03 1 Temperature Dependence nm/°C 0.01 Bragg mirror Reflectivity % 5 10-98 >99.9 Reflectivity Tolerance1 % -5 +5 Grating Slant Angle Degrees <1 custom available Standard Dimensions (X,Y) mm 0.5 25 Thickness mm 0.3 0.6-3 30 1 Standard…