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Changchun New Industries Optoelectronics Technology Co., Ltd.
Lasers, Optics & Photonics

Products
Lasers
Spectrum Analysis
Laser Application Systems
Laser Measurement & Safety
Laser Marking
Laboratory Instruments
Optics & Coatings
Components & Accessories
Fiber-Coupled LEDs
Customized Products
 
Components & Accessories
Laser Diode
Laser Optics
Fiber for Laser Coupling
Beam Expander
AOM and Shutter
Multi-function Optical System
Variable Attenuator
Laser Goggles

<<More

 
Customer Service
TTL or Analog Modulation
Fiber Coupling
Coating Service
Laser Marking Service
Complete Solution
 
Contact CNI
Tel: +86-431-85603799 / 89216078
國內: 0431-87020257 / 89216068
Fax:    +86-431-87020258
E-mail:  [email protected]
 

Precision 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.
Coated Laser Crystal

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.

Output Coupler

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.
Frequency Doubling Crystal

Standard Product

Crystals

Size(mm3)

Coating

LBO

2x2x5 [email protected]&532nm/946nm&473nm/1342nm&671nm
2x2x10

KTP

2x2x5

[email protected]&532nm

2x2x9

BBO

2x2x5

[email protected]/532nm/266nm
2x2x10
 

Lens

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/[email protected]

Lens

Part No.

Illustration

Property and Application

Plano-Convex Lens

L01

Positive focus length. Most 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 most suited to producing diverging light or a virtual image, where the input light is converging.

Plano-Concave Lens

L03

Negative lens with the form most suitable where one conjugates is more than five times the other, e.g. producing divergent light from a collimated input beam.


Waveplate

Crystalline quartz is frequently used for the most stringest quality retardation applications, Zero-order waveplate is made by cementing together two quartz plates with their fast axes orthogonal to each other. The difference in thickness is equal to either λ/4 or λ/2 for a specified wavelength. Compared with multiple-order quartz retarders, they are much more insensitive to the variation of retardation with wavelength, temperature and angle of incidence. Waveplates of other wavelength and sizes are custom made.

 

Half Waveplate

When applying a linearly polarized beam to a half waveplate, it emerges as a linearly polarized beam but its polarization plane is rotated with respect to the polarization plane of the input beam. The rotation of the polarization plane is such that the angle between the input polarization and the output polarization is twice the angle between the input polarization and the waveplate's axis. When applying a circularly polarized beam, a clockwise circular polarization will transform into a counter-clockwise circular polarization and vice versa.

 

Quarter Waveplate

When applying a linearly polarized beam with the polarization plane aligned at 45deg to the waveplate's principal plane, the output beam will be circularly polarized. Similarly when applying a circularly polarized beam to a ¦Ë/4 waveplate the output beam will be linearly polarized. When a quarter waveplate is double passed, i.e. by mirror reflection, it acts as a half waveplate and rotates the plane of polarization to a certain angle. Quarter waveplates are widely used in creating circular polarization from linear or linear polarization from circular, ellipsometry, optical pumping, suppressing unwanted reflection, optical isolation and etc.

 

Type of Waveplate
 

Type

 

Feature

Zero Order

Cemented

  • Cemented by glue
  • Better Temperature Bandwidth
  • Wide Wavelength Bandwidth
  • Moderate damage threshold

Optical Contacted

  • No glue
  • Better Temperature Bandwidth
  • Wide Wavelength Bandwidth
  • Better damage threshold

Air Spaced

  • No glue, Mounted
  • Better Temperature Bandwidth
  • Wide Wavelength Bandwidth
  • High damage threshold

True Zero Order

Cemented

  • Cemented by glue
  • Better Temperature Bandwidth
  • Wide Wavelength Bandwidth
  • Moderate damage threshold

Single Plate

  • Single plate
  • Better Temperature Bandwidth
  • Wide Wavelength Bandwidth
  • High damage threshold
  • Only 1310nm, 1550nm available

Multi Order

  • Low Temperature Bandwidth
  • Low Wavelength Bandwidth
  • High damage threshold
  • Low cost

 

Specification

Material:

Crystal Quartz

Dimension allowance:

+0.0, -0.15mm

Phase contrast Retardation :

λ/8,λ/4,λ/2, or discretional

Wavefront distortion:

≤λ/[email protected] barring Cemented Waveplate

Retardation tolerance:

≤λ/300≤λ/500

Wavelength range:

260-1600 nm

Parallelism:

≤1 arc second

Surface quality:

20/10 scratches and dig

Clear aperture:

≥90%

AR coating:

R≤0.25% at central wavelength

 

Comparison of Waveplates

Order of Waveplate

Multi

Low

Cemented Zero

Cemented Broad-band Zero

Total Thickness (mm)

~1

≤0.5

1.5~2

1.5~3

Spectral Bandwidth (nm)

0.5

1.5

30

110

 

Standard Products of Multi Order Half-Waveplates

Item No.

Dia.(mm)

Wavelength

OD

Thickness

HWPZ-445-12

12.7mm

445nm

1.0"

0.7mm

HWPZ-457-12

12.7mm

457nm

1.0"

0.7mm

HWPZ-473-12

12.7mm

473nm

1.0"

0.7mm

HWPZ-532-12

12.7mm

532nm

1.0"

0.7mm

HWPZ-589-12

12.7mm

589nm

1.0"

0.7mm

HWPZ-638-12

12.7mm

638nm

1.0"

0.7mm

HWPZ-671-12

12.7mm

671nm

1.0"

0.7mm

HWPZ-914-12

12.7mm

914nm

1.0"

0.7mm

HWPZ-946-12

12.7mm

946nm

1.0"

0.7mm

HWPZ-1064-12

12.7mm

1064nm

1.0"

0.7mm

HWPZ-1122-12

12.7mm

1122nm

1.0"

0.7mm

HWPZ-1342-12

12.7mm

1342nm

1.0"

0.7mm


Filter
Absorption, and particularly wavelength selective absorption is an important factor in the function of the filters. The two most 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
        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

670

0.06

570

0.82

530

0.97

470

0.97

420

0.90

350

0.65

320

0.04

   
Filter for 671 nm laser
(Filter-671)

1060

0.01

780

0.37

670

0.77

660

0.82

650

0.82

630

0.87

560

0.97

530

0.95

370

0.94

280

0.01

   
Filter for 1064 nm laser
(Filter-1064)

2700

0.83

1900

0.98

1300

0.98

1060

0.98

980

0.97

950

0.97

860

0.75

840

0.25

800

5×10-4


Line Generator

CNI can offer line lasers at all existing wavelengths and output power, also the divergence are available infan angles of 5°, 7°, 10°, 30°, 45°, 60°, 75°, 90° and 100° for custom applications. These series lasers can be used to display a uniform straight reference line for use in alignment, machine vision systems, construction and process control.

 

                           Specification

Part No.

Full fan Angle (α°)

Material

LG##

 7°, 10°, 30°, 45°, 60°, 75°, 90°

BK7

                                    Note: Other sizes, angles are available upon request

 


Beam Splitter & Combiner

            

  • Superior broadband performance

  • Extinction ratio >500:1, 1000:1 average

  • Low wavefront distortion

 

Product Detail

Broadband polarizing cube beamsplitters provide efficient polarization for use with multiple or tunable sources. Each polarizer consists of a pair of precision right-angle prisms carefully cemented together to minimize wavefront distortion. The hypotenuse of one of the prisms is coated with a multilayer dielectric polarizing beamsplitter coating optimized for a broad wavelength range. The four faces are antireflection coated with a multilayer dielectric coating to minimize surface reflection losses.
An unpolarized beam is split into two orthogonal, linearly polarized components. P-polarized light is transmitted, while s-polarized light is reflected, both with negligible absorption. The extinction ratio is better than 500:1, yet it averages 1000:1. This unique component provides all the benefits of a broadband polarizer in a standard cube configuration.
Broadband polarizing cube beamsplitters are available in four wavelength ranges covering the visible through near infrared. They are offered in two sizes:12.7 and 25.4
 
mm.

 

Specification

Material

BK7grade A optical glass, Fused silica

T/R:

50/50±5 for specified wavelength  R=(RsRp)/2T=(TsTp)/2

Incidence Angle:

0°±2°

Beam Deviation:

0°±3'(T)0°±5'(R)

Coatings:

dichroic multiplayer beamsplitter film on hypotenuse, AR film on the four polished surfaces of the prism

Surface Flatness:

0.3-3

Surface Quality:

20/10 to 80/50

Clear Aperture:

>90% dimension

Application: Spectrophotometer, interferometer, tunable laser etc.

Dimension, T/R, incident angle, wavelength range or other specs are available upon request.

 

Standard Wavelength
 

Narrow Band

532, 632.8, 780, 850, 1064, 1550nm

Broad Band

450-650, 650-900, 900-1200nm

 


Mirror & Windows

Standard Product

No

A (mm)

B (mm)

C (mm) D E Material

1

26±0.2

4.6±0.2

1.8±0.2 ¢22 ¢33-0.1 H-K9L (or H-BaK7)

2

24±0.1 4±0.05 1.15±0.2 ¢22 ¢34-0.1  

 

Specification

 

AR coating (400-700nm) R≤0.5%

Metal Reflecting T≤0.5%

 


Standard Product

No

A (mm)

B (mm)

C (mm)

PV Value   Material

1

5.0±0.1

5.0±0.1 

0.7±0.1

<0.02 (Test by ZRGO Test area 5×5) Coating on side (532nm, 635nm, 808nm, IR-CUT) B270 (H-K9L) Soda Lime
2 20±0.1 20±0.1 1±0.02
3 80±0.1 80±0.1 (0.5,0.7,1.0,1.5,1.7,2.0,3.0mm)±0.03
4 76±0.1 76±0.1 (0.8,1.0,1.5,2.0,2.5mm)±0.03
5 60±0.1 60±0.1 5.6±0.03 2.02 808nm±45: R≥98% H-K9L
6 11.6±0.1 11.6±0.1 2.2±0.03   AR ZAB25

7

5.2±0.05  5.2±0.05 1±0.03 0.02 Coating MgF2 Quartz glass

Addr: No.888 Jinhu Road High-tech Zone,Changchun 130103, P.R.China
Domestic Tel:  0431-87020257   International Tel: +86-431-85603799   Fax:+86-431-87020258   
 
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