|
|
|
|
|
Laser
Optics |
|
CNI design and manufacture of precision
optical components and assemblies. As described
in the customer solutions, we have strong
capability to design and fabricate custom made
optics with variously optical materials. |
|
|
◆Coated Laser
Crystal |
|
CNI
is capable of supplying a large quantity of
laser crystals with high damage coatings to meet
the tough requirement from both the OEM and R&D
customers. |
 |
Standard Product |
|
Crystals |
Doping |
Size(mm3) |
Coating |
|
Nd:YVO4 |
1% |
3x3x2 |
Coated for 1064 nm, 532 nm, 1342 nm,
671 nm laser as required. |
|
0.5% |
3x3x5 |
|
Nd:YAG |
1% |
3x3x2 |
Coated for 1064 nm, 532 nm, 946 nm,
473 nm laser as required. |
|
1% |
3x3x3 |
|
|
|
|
◆Output Coupler |
|
An output coupler (OC) is a partially reflective
mirror used in lasers to extract a portion of
the laser beam from the optical resonator. Lasers
operate by reflecting light between two or more
mirrors which have an active laser medium
between them. The medium amplifies the light by
stimulated emission. For lasing to occur, the
gain of the active medium must be larger than
the total loss, which includes both unwanted
effects such as absorption, and the intentional
release of energy through the output coupler. In
other words the laser must attain threshold. |
|
|
 |
Standard Product |
|
Wavelength |
Size |
Coating |
|
473 nm OC |
ø4 mm,
R=50/100/200 mm |
Plano-Concave, HR946 nm,
HT473nm |
|
532 nm OC |
ø4 mm,
R=50/100/200 mm |
Plano-Concave, HR1064 nm,
HT532nm |
|
671 nm OC |
ø4 mm,
R=50/200 mm |
Plano-Concave, HR1342 nm,
HT671nm |
|
1064 nm OC |
ø4 mm,
R=50/100/200 mm |
Plano-Concave,
PR1064nm |
|
|
|
|
◆Frequency
Doubling Crystal |
|
Frequency
Doubler or Second Harmonic Generation (SHG) is a
special case of sum frequency generation if the
two input wavelengths are the same. The simplest
scheme for frequency doubling is extracavity
doubling. The laser passes through the nonlinear
crystal only once. However, if the power density
of laser is low, focused beam, intracavity
doubling and external resonant cavity are
normally used to increase the power density on
the crystals. |
|
|
 |
Standard Product |
|
Crystals |
Size(mm3) |
Coating |
|
LBO |
2x2x5 |
AR@1064nm&532nm/946nm&473nm/1342nm&671nm |
|
2x2x10 |
|
KTP |
2x2x5 |
AR@1064nm&532nm |
|
2x2x9 |
|
BBO |
2x2x5 |
AR@1064nm/532nm/266nm |
|
2x2x10 |
|
|
|
|
◆Lens |
 |
Standard Product |
|
Material: BK7 grade A optical glass |
|
Design Wavelength: 546.1 nm |
|
Design Index: 1.5183 ±0.0005 |
|
Diameter Tolerance: +0.0, -0.15 mm |
|
Paraxial Focal Length: ±2% |
|
Centration: 3 arc minutes |
|
Clear Aperture: >80% |
|
Bevel: 0.25 mm x 45° |
|
Surface Quality: 60-40 scratch and dig |
|
Surface Figure: l/4@632.8nm |
|
|
|
|
Lenses |
Part
No. |
Illustration |
Property and
Application |
|
Plano-Convex
Lens |
L01 |
|
Positive
focus length. Suitable where one conjugate is more than five
times the other. Also where both conjugates are on the same side of
the lens. |
|
Double-Concave Lens |
L02 |
|
Negative
lens with the form suited to producing diverging light or a
virtual image, where the input light is converging. |
|
Plano-Concave
Lens |
L03 |
|
Negative
lens with the form suitable where one conjugates is more than
five times the other, e.g. producing divergent light from a
collimated input beam. |
|
|
|
|
◆Filter |
|
Absorption,
and particularly wavelength selective absorption
is an important factor in the function of the
filters. The two commonly used absorbers
are thin metallic films which are particularly
insensitive to wavelength for absorption, and
colored glasses which absorb wavelengths varied
by as much as several orders of magnitudes in
only tens of nanometers. Interference filters
are multilayer dielectric thin film devices.
Metallic films, colored glasses and thin
dielectric films are used in
CNI filters.
|
|
|
Band Pass
Filters |
|
Applications:
|
|
 Emission
filters in fluorescence |
|
Sorting filters in photometry |
|
Stray light
or trim filters |
|
Eliminate
unwanted near band radiation |
|
|
|
Specification
(Cut-on
λc) |
λ (nm) |
Transmittance |
Filter for 473/ 532 nm laser
(Filter-473/ 532) |
700 |
0.01 |
|
|
0.06 |
|
|
0.82 |
|
|
0.97 |
|
470 |
0.97 |
|
|
0.90 |
|
350 |
0.65 |
|
320 |
0.04 |
|
|
|
Filter for 671 nm laser
(Filter-671) |
1060 |
0.01 |
|
|
0.37 |
|
670 |
0.77 |
|
660 |
0.82 |
|
|
0.82 |
|
|
0.87 |
|
560 |
0.97 |
|
|
0.95 |
|
370 |
0.94 |
|
280 |
0.01 |
|
|
|
Filter for 1064 nm laser
(Filter-1064) |
2700 |
0.83 |
|
1900 |
0.98 |
|
1300 |
0.98 |
|
|
0.98 |
|
980 |
0.97 |
|
|
0.97 |
|
|
0.75 |
|
|
0.25 |
|
800 |
5*10-4 |
|
|
|
|
|
|
