Optical parametric oscillation (OPO): We make use of OPO to find out our objects�?nonlinear conversion functionality and stage-matching angle to get a given input wavelength and signal/idler wavelengths. We make sure that our merchandise fulfill the requirements for OPO purposes.
In several conditions, a nonlinear crystal useful for nonlinear frequency conversion has an incredibly lengthy life time, which happens to be for a longer time than that of the whole laser process. The crystal material is essentially not modified all through Procedure. However, a decreased crystal lifetime can manifest under many instances:
The injury analysis is going to be completed on a similar optic (client's optic will not be ruined). Screening may bring about further fees or direct periods. Call Tech Support for more information.
The basic field now driving the sort-I SHG course of action may be the Eoγ element on the incident subject. At γ = 90°, there could be zero SHG output, since the travel subject Eoγ = 0.
, the angle in between The sunshine's propagation course along with the crystal's optic axis could be tuned so which the refractive index of a specific frequency (ω) in the elemental input pulse particularly equals the refractive index of twice the enter frequency (twoω). It really is usual to enhance stage matching problems with the frequency at somewhere around the middle of the heart beat's bandwidth.
In the case of Form-I section matching and β-BBO crystals, the elemental light propagates as a rare wave in the crystal, whilst the second harmonic gentle propagates as a standard wave.
When an optic is destroyed by a constant wave (CW) laser, it is often as a result of melting from the area due to absorbing the laser's energy or harm to the optical coating (antireflection) [one]. Pulsed lasers with pulse lengths more time than one µs might be dealt with as CW lasers for LIDT conversations.
BBO crystals are used inside of a wide array of applications due to their Fantastic optical Houses. They are generally used in laser programs for frequency conversion, together with second, 3rd, and fourth harmonic era. This enables with the manufacture of laser gentle at distinctive wavelengths from an individual enter wavelength.
In quasi-phase matching, the crystal material is “poled�?to have up and down domains to counteract the period-mismatch of the fabric, in which the poling period of time is specific for the wavelengths of interaction.
GWU-Lasertechnik features all conventional nonlinear crystals like LBO, BBO and KTP which has a broad number of technical specs. Beside the perfectly-recognized materials, ground breaking crystals like CLBO or BiBO with superb Attributes for e. g. deep-UV era or high-electric power ultrashort pulse lasers are available. It doesn't matter if particular person items for R & D applications are essential or Charge-efficient numbers in compact, medium or substantial batches with in-time supply for your manufacturing line are required: GWU’s focused provider really helps to find the ideal Main parts on your application.
We use Numerical Aperture (NA) to explain the extent of the angular material. Ideally, click here the basic laser gentle might be collimated all through the crystal, due to the fact collimated light-weight resembles a gaggle of rays aligned to the exact same way with an NA of zero.
Also, it might be hugely desirable to implement a crystal materials that may be critically phase-matched at area temperature due to the fact noncritical section matching usually involves the operation with the crystal in a very temperature-stabilized crystal oven. Nevertheless, the feasibility of essential section matching might be specified just for adequately high peak powers.
When an enter pulse's spectral vary is equivalent to or narrower compared to the reference pulse, the generated second harmonic pulse includes a length that is certainly shorter by a factor of 1/√2 along with a spectral width which is broader by a factor of √two.
Regardless of whether the crystal material or coating is not sensitive to water, small water droplets may focus laser radiation more tightly than less than ordinary Procedure, and therefore injury the crystal product.