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- Beam_parameter_product abstract "In laser science, the beam parameter product (BPP) is the product of a laser beam's divergence angle (half-angle) and the radius of the beam at its narrowest point (the beam waist). The BPP quantifies the quality of a laser beam, and how well it can be focused to a small spot.A Gaussian beam has the lowest possible BPP, , where is the wavelength of the light. The ratio of the BPP of an actual beam to that of an ideal Gaussian beam at the same wavelength is denoted M² ("M squared"). This parameter is a wavelength-independent measure of beam quality.The quality of a beam is important for many applications. In fiber-optic communications beams with an M2 close to 1 are required for coupling to single-mode optical fiber. Laser machine shops care a lot about the M2 parameter of their lasers because the beams will focus to an area that is M2 times larger than that of a Gaussian beam with the same wavelength and D4σ waist width; in other words, the fluence scales as 1/M2. The general rule of thumb is that M2 increases as the laser power increases. It is difficult to obtain excellent beam quality and high average power (100 W to kWs) due to thermal lensing in the laser gain medium.".
- Beam_parameter_product wikiPageExternalLink DILAS_PW11_7918-8_ZW.pdf.
- Beam_parameter_product wikiPageID "4443719".
- Beam_parameter_product wikiPageRevisionID "568463901".
- Beam_parameter_product hasPhotoCollection Beam_parameter_product.
- Beam_parameter_product subject Category:Laser_science.
- Beam_parameter_product comment "In laser science, the beam parameter product (BPP) is the product of a laser beam's divergence angle (half-angle) and the radius of the beam at its narrowest point (the beam waist). The BPP quantifies the quality of a laser beam, and how well it can be focused to a small spot.A Gaussian beam has the lowest possible BPP, , where is the wavelength of the light. The ratio of the BPP of an actual beam to that of an ideal Gaussian beam at the same wavelength is denoted M² ("M squared").".
- Beam_parameter_product label "Beam parameter product".
- Beam_parameter_product label "Strahlparameterprodukt".
- Beam_parameter_product sameAs Strahlparameterprodukt.
- Beam_parameter_product sameAs m.0c2q8w.
- Beam_parameter_product sameAs Q180407.
- Beam_parameter_product sameAs Q180407.
- Beam_parameter_product wasDerivedFrom Beam_parameter_product?oldid=568463901.
- Beam_parameter_product isPrimaryTopicOf Beam_parameter_product.