Laser Optics

AZURE 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

4 mm, R=50/100/200 mm

Plano-Concave, HR946 nm, HT473nm

532 nm OC

4 mm, R=50/100/200 mm

Plano-Concave, HR1064 nm, HT532nm

671 nm OC

4 mm, R=50/200 mm Plano-Concave, HR1342 nm, HT671nm
1064 nm OC 4 mm, R=50/100/200 mm Plano-Concave,PR1064nm


Frequency Doubler

 

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 Doubler

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

             

Lens

Specifications

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. 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.


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