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Gires-Tournois Mirrors

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Gires-Tournois Mirrors

The group delay dispersion (GDD) measurement system characterizes the GDD properties of reflective and transmissive optics that are used with femtosecond pulsed lasers.
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      • Material: Fused Silica or N-BK7

      • Custom reflectivity and GDD

      • Rs & Rp >99.8% @design wavelength

      • GDD from -250 to -600 fs2

      • High damage threshold

 

  Below lists two standard dielectric broadband coatings offered by CASTECH. Other coatings can be designed upon your request.

Coating Code

Center Wavelength (nm)

Angle of Incidence

Reflectivity per Surface

GT1

1020-1060

R& Rp >99.8%

GT2

780-820

RRp >99.8%

Metrology

  The group delay dispersion (GDD) measurement system characterizes the GDD properties of reflective and transmissive optics that are used with femtosecond pulsed lasers. Ultrafast pulses broaden as they propagate through an optical system, short pulse widths can be recovered by knowing the GDD induced by each optics and compensating for the distortions appropriately. For highly accurate and reliable results, the GDD measurement uses time-domain white light interferometer to measure the GDD. This dispersion measurement system includes software that guides the user through beam alignment, automatically finds the zero time delay position, and rapidly and accuracy measures the dispersion. Every coating batch is tested in house by GDD measurement system to confirm your high-performance values.

 

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  • Gires-Tournois Mirrors

  • The group delay dispersion (GDD) measurement system characterizes the GDD properties of reflective and transmissive optics that are used with femtosecond pulsed lasers.
Description
CAS' TECH CLASS
Parameters
Download
Download

      • Material: Fused Silica or N-BK7

      • Custom reflectivity and GDD

      • Rs & Rp >99.8% @design wavelength

      • GDD from -250 to -600 fs2

      • High damage threshold

 

  Below lists two standard dielectric broadband coatings offered by CASTECH. Other coatings can be designed upon your request.

Coating Code

Center Wavelength (nm)

Angle of Incidence

Reflectivity per Surface

GT1

1020-1060

R& Rp >99.8%

GT2

780-820

RRp >99.8%

Metrology

  The group delay dispersion (GDD) measurement system characterizes the GDD properties of reflective and transmissive optics that are used with femtosecond pulsed lasers. Ultrafast pulses broaden as they propagate through an optical system, short pulse widths can be recovered by knowing the GDD induced by each optics and compensating for the distortions appropriately. For highly accurate and reliable results, the GDD measurement uses time-domain white light interferometer to measure the GDD. This dispersion measurement system includes software that guides the user through beam alignment, automatically finds the zero time delay position, and rapidly and accuracy measures the dispersion. Every coating batch is tested in house by GDD measurement system to confirm your high-performance values.

 

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