Laser Crystals and Components
Femtosecond laser optics is a kind of ultrafast optics used for femtosecond lasers. Femtosecond lasers are ultrafast pulsed lasers with a pulse duration less than 1ps, which is in the scale of femtoseconds (1 femtosecond equals to 1^-15 second). Such a short laser pulse is often achieved through passive mode-locking techniques. Femtosecond lasers can, in general, be categorized into solid-state bulk lasers, fiber lasers, dye lasers, semiconductor lasers, etc. Femtosecond lasers concentrate the energies on a very short time scale within a single laser pulse, enabling femtosecond lasers to achieve remarkable precision with minimal thermal damage to the surrounding material. This unique characteristic makes them invaluable in various applications, including micromachining, ophthalmic surgeries, biomedical imaging, and ultrafast spectroscopies.
Ultrafast optics are critical for shaping, manipulating, ultra-short pulses emitted from femtosecond lasers and for directing laser beams. Unlike conventional continuous-wave lasers, femtosecond lasers produce pulses with extraordinarily high peak powers and broad spectral bandwidths, requiring optical components that can reflect, transmit, modulate, and control light across a wide range of wavelengths and ultrashort time durations with high efficiencies. Ultrafast lasers are very sensitive to optical effects like chromatic dispersion and nonlinearities, so it is necessary to consider these effects when designing ultrafast optics.
Shalom EO offers a diverse range of custom and off-the-shelf ultrafast optics for femtosecond lasers. In our factory, we use the IAD e-beam coating techniques to fabricate the dielectric coatings. The IAD e-beam coating technique combines electron beam evaporation in addition to the assistance of an ion bombard, which results in improved adhesion and denser thin film , leading to excellent LIDT and optical performance. The SHINCRON MIC-1350TBN coating machine is used for coating. PerkinElmer Lambda 1050+ spectrometer, Ultrafast Innovations GOBI white light interferometer are used to test the coatings. The ultrafast laser optics are ideal for ultrafast lasers like Ti:Sapphire laser, ytterbium laser, etc., including:
1) Ultrafast mirrors (femtoline low GDD dielectric mirrors, ultrafast-enhanced silver mirrors) designed to provide high reflectance, while introducing minimal group delay dispersion (GDD, also known as the second order dispersion) and distortion for ultrafast laser pulses or femtosecond laser during propagation. The femtosecond dielectric mirrors feature reflectivities >99.9%, low GDD of ±20fs2, and a high laser induced damage threshold of 2J @1030nm,100ps,100hz or 300mJ/cm2@800nm, 100fs, 100hz.
2) Chirped mirrors and chirped mirror pairs for dispersion compensation and pulse compression, chirped pulse amplification, both stock and custom available
3) Ultrafast harmonic separators for the separation of the laser fundamental wavelengths and harmonic wavelengths
4) Ultrafast thin lenses (both plano-convex and plano-concave), low GDD of ±10fs2
5) Nonlinear optical crystals (BBO crystals, LBO crystals) are utilized for nonlinear harmonic generation
6) Ultrafast thin windows (standard 0.1mm~3mm thick)
7) Ultrafast Thin Film Polarizers: plano-plano plate polarizers with an extinction ratio of 1000:1
8) Pulse diagnostics and control components (group velocity delay compensators, dispersion prisms) used to optimize femtosecond pulse parameters, such as pulse duration, temporal profile, and spectral content
Shalom EO has industrial-leading expertise in manufacturing ultrafast optics for femtosecond lasers, from ultrafast optics to nonlinear optical elements. Our components are designed and crafted with precision engineering to deliver superior performance across a wide range of femtosecond laser applications, where you can experience an optimized solution with our optical components optimized for femtosecond pulse durations and high peak powers. Our femtoline laser optical components minimize dispersion, phase distortion, and losses to maintain pulse qualities, spatial coherence, and beam-pointing stabilities, enabling you to achieve exceptional results in your experiments or other applications.
You can also learn more in related resources below:
1) Learning About The Physics of Ultrafast Lasers: This article gives a comprehensive introduction to the physics behind ultrafast lasers, including the definition of ultrafast lasers, their characteristics (spectral bandwidth and peak power), and the techniques (mode-locking and chirped pulse amplification) used to produce ultrafast lasers.
2) High Power Ultrafast Laser Mirrors-You Need to Know: In this article, which is we will be looking at different aspects of ultrafast lasers, including how are ultrafast lasers produced (via mode locking and chirped pulse amplification), the optics needed for a ultrafast femtoline laser setup, the core elements for ultrafast lasers-ultrafast laser, mirrors the technical challenges for ultrafast laser mirrors.
3) Dispersion Compensation Chirped Mirrors: In this article, which is we will be looking at different aspects of ultrafast lasers, including how are ultrafast lasers produced (via mode locking and chirped pulse amplification), the optics needed for a ultrafast femtoline laser setup, the core elements for ultrafast lasers-ultrafast laser, mirrors the technical challenges for ultrafast laser mirrors.In this article, which is we will be looking at different aspects of ultrafast lasers, including how ultrafast lasers are produced (via mode locking and chirped pulse amplification), the optics needed for a ultrafast femtoline laser setup, the core elements for ultrafast lasers-ultrafast lasers, mirrors the technical challenges for ultrafast laser mirrors.
4) Instant Guide-Important Specifications for Ultrafast Optics: In this blog, we break down the five critical parameters you should evaluate before purchasing ultrafast optics, such as mirrors, lenses, windows, or dispersion compensation elements. We give you guidance on the following specifications: 1. The Wavelength Range, 2.Dispersion, 3. Dispersion Compensation, 4. Average Power, Fluence, Peak Power, 5. Laser Induced Damage Threshold, 6.Angle of Incidence, 7. Polarization, 8. Surface Specification.
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