Laser Aperture Calculator

Professional laser aperture calculator for optical system design and analysis. Calculate numerical aperture, acceptance angle, and beam parameters for optimal system performance.

Numerical Aperture Analysis

Core Diameter

Core Refractive Index at design wavelength

Cladding Refractive Index at design wavelength

Wavelength

Fiber Type

Aperture Analysis Results

Primary Parameters

Numerical Aperture: -

Acceptance Angle: -

Acceptance Cone: -

F-Number: -

System Performance

Light Gathering Power: -

Resolution Limit: -

Coupling Efficiency: -

Beam Parameter: -

Optical Characteristics

Mode Field Diameter: -

V-Parameter: -

Number of Modes: -

Fiber Category: -

Aperture Diagram

Key Formulas

Numerical Aperture:

NA = √(n₁² - n₂²)

Acceptance Angle:

θ = arcsin(NA/n₀)

F-Number:

f/# = 1/(2×NA)

Fiber Types

Single Mode: NA ~0.1-0.14
Multimode Step: NA ~0.2-0.5
Multimode Graded: NA ~0.2-0.3
Plastic Fiber: NA ~0.5-0.6

Applications

Fiber Coupling: Mode matching
Laser Diodes: Beam collimation
Imaging: Resolution optimization
Communications: Link budget

Design Guidelines

Higher NA: More light collection
Lower NA: Better beam quality
Matching: Minimize losses
V < 2.405: Single mode operation

⚠️ Optical Safety

Aperture Safety Warning: Large numerical apertures can collect and focus significant optical power. Ensure proper beam containment and eye safety measures when working with high-NA optical systems. Always use appropriate laser safety eyewear and follow IEC 60825 safety standards.