Loading [MathJax]/extensions/TeX/color.js
eo_logo
 
Product added to cart

 
Laser Induced Damage Threshold
Scaling Calculator

View All Technical Tools

LIDT(λ1,τ1,∅1)(J/cm2):
Wavelength 1, λ1(nm):
Pulse Duration 1, τ1(ns):
Beam Diameter 1, ∅1(mm):
Wavelength 2, λ2(nm):
Pulse Duration 2, τ2(ns):
Beam Diameter 2, ∅2(mm):

LIDT(λ2,τ2,∅2)(J/cm2): --     

Focal Length Calculator
$$ \text{LIDT} \! \left( \lambda_2, \tau_2, ∅_2 \right) \approx \text{LIDT} \! \left( \lambda_1, \tau_1, ∅_1 \right) \times \left( \frac{\lambda_2}{\lambda_1} \right) \times \sqrt{\frac{\tau_2}{\tau_1}} \times \left( \frac{∅_1}{∅_2} \right)^2  $$
λ1 Wavelength of known LIDT
λ2 Wavelength of new LIDT
τ1 Pulse duration of known LIDT
τ2 Pulse duration of new LIDT
∅1 Beam diameter of known LIDT
∅2 Beam diameter of new LIDT
Notes:
  • Please use the American standard for number formatting rather than the European standard (i.e. for "two and a half," enter "2.5" rather than "2,5").
  • This calculator is valid for wavelengths between 248-1100nm, pulse durations between 1-100ns, and beam diameters between 1-25mm. Since the equation used is only valid for small shifts in use parameters, this calculator is only intended to be used for shifts in use conditions within these limits:
    • ± 5% of input wavelength
    • ± factor of 3 of pulse duration
    • ± factor of 2 of beam diameter
  • Temporal scaling of pulse duration following (τ2/τ1)0.5 is a commonly accepted convention and experimental observations of this relationship range from (τ2/τ1)0.3 to (τ2/τ1)0.6, depending on what exactly was measured.1

Description

The laser induced damage threshold (LIDT) of an optical component is dependent on wavelength, pulse duration, and beam diameter. If an optic’s specified LIDT is at a different wavelength, pulse duration, or diameter than that of the application, the LIDT must be re-evaluated at the application specifications. For small changes in these specifications, the resulting scaling of LIDT can be approximated. The larger the difference between the test conditions and the use conditions, the less accurate the scaling. This calculator takes a given LIDT value for a pulsed laser at a known wavelength (λ1), pulse duration (τ1), and beam diameter (∅1), and scales it to a new LIDT at a different wavelength (λ2), pulse duration (τ2), and beam diameter (∅2).

Example

Question: What is the approximate LIDT of an optic at a wavelength of 515nm, pulse duration of 30ns, and beam diameter of 2mm if the optic has a specified LIDT of 10 J/cm2 at a wavelength of 532nm, pulse duration of 20ns, and beam diameter of 3mm?

Answer: The approximate LIDT at the new use conditions can be determined by:

\begin{align}
\text{LIDT} \! \left( 515 \text{nm}, 30 \text{ns}, 2 \text{mm} \right) &  \approx 10 \tfrac{\text{J}}{\text{cm}^2} \times \left( \frac{515 \text{nm}}{532 \text{nm}} \right) \times \sqrt{\frac{30 \text{ns}}{20 \text{ns}}} \times \left( \frac{3 \text{mm}}{2 \text{mm}} \right)^2  \\
& = 26.7 \tfrac{\text{J}}{\text{cm}^2} 
\end{align}

The approximate LIDT at the new use conditions will be more than 2X higher than the LIDT at the test conditions.

Related Resources and Products

 Application Note
Understanding and Specifying LIDT of Laser Components
Understanding and Specifying LIDT of Laser Components

 Application Note
Importance of Beam Diameter on Laser Damage Threshold
Importance of Beam Diameter on Laser Damage Threshold

 Application Note
Why Laser Damage Testing is Critical for UV Laser Applications
Why Laser Damage Testing is Critical for UV Laser Applications

 Application Note
The Complexities of High-Power Optical Coatings
The Complexities of High-Power Optical Coatings

 Video
Laser Optics Lab
Laser Optics Lab


 Article
The art and science of designing optics for laser-induced damage threshold
The Art and Science of Designing Optics for Laser-Induced Damage Threshold

Laser Line
Mirrors

Laser Beam
Expanders

Laser
Lenses

Laser
Beamsplitters

Laser
Windows

Laser
Polarization

Laser
Prisms

Laser
Filters

References

  1. Niemz, M. H. “Threshold Dependence of Laser‐Induced Optical Breakdown on Pulse Duration.” Applied Physics Letters, vol. 66, no. 10, Dec. 1994, pp. 1181–1183., doi:10.1063/1.113850.
  2. Rainer, F., et al. “Bulk And Surface Damage Thresholds Of Crystals And Glasses At 248 nm.” Optical Engineering, vol. 22, no. 4, 1983, pp. 431–434., doi:10.1117/12.7973139.
  3. Rastogi, Vinay, et al. “Laser Induced Damage Studies in Borosilicate Glass Using Nanosecond and Sub Nanosecond Pulses.” Journal of Non-Crystalline Solids, vol. 463, 1 Mar. 2017, pp. 138–147., doi:10.1016/j.jnoncrysol.2017.03.006.
  4. Smith, Arlee V., and Binh T. Do. “Bulk and Surface Laser Damage of Silica by Picosecond and Nanosecond Pulses at 1064 Nm.” Applied Optics, vol. 47, no. 26, 9 Sept. 2008, pp. 4812–4832., doi:10.1364/ao.47.004812.
  5. Stuart, B. C., et al. “Nanosecond-to-Femtosecond Laser-Induced Breakdown in Dielectrics.” Physical Review B, vol. 53, no. 4, 9 Feb. 1996, pp. 1749–1761., doi:10.1103/physrevb.53.1749.
這項內容對您是否實用？
 
Sales & Expert Advice
 
or view regional numbers
 Live Chat
Easy-to-Use
QUOTE TOOL
enter stock numbers to begin
Sign-up Today | Industry trends, new products, discounts, and technical content  Sign-up
About Us About UsTradeshows Regional Offices Careers Press Releases Case Studies Compliance TECHSPEC®Brand Partnerships
Customer Care ShippingReturnsFAQsGive Feedback Manufacturing Services Precision Optics Filter Optics Laser Optics Imaging Optics
Discounts & Programs All Discount Programs Vision Integration Partners Volume Discount ServicesEducational Discount Program Educational Award Discounted Products Edmund Scientific Outreach E-procurement Platforms
Catalogs All Catalogs Digital Catalogs Catalog Preferences

Copyright 2023, Edmund Optics Inc., 14F., No.83, Sec. 4, Wenxin Road, Beitun District , Taichung City 406, Taiwan (R.O.C.)

Privacy Policy | Cookie Policy | Terms & Conditions | Accessibility
California Consumer Privacy Act (CCPA): Do Not Sell My Information