Mosebetsi oa sehahi sa mahlaseli a letsatsi ke ho fetola boemo ba Gaussian ba mohloli oa leseli (hangata o sebelisoang ka laser) ho ba boemo ba Top-Hat.
Moralo o ipapisitse le mohlala oa phetisetso o ka sebelisoang ka boholo bo phahameng ba mahlaseli a ho kenya a 4.6mm le tlhahiso ea 8mm. Mahlaseli a ho ntša ka mor'a ho shaper a kolobisitsoe, kahoo a ka sebelisoa le lilense tse tloaelehileng. Re bulehetse litlhoko tse ling tsa bolelele ba maqhubu ho latela lits'ebetso tsa hau tse ikhethileng.