| 摘要 |
PROBLEM TO BE SOLVED: To achieve output improvement and characteristic stabilization of a red semiconductor laser. SOLUTION: In a method of manufacturing the semiconductor laser element having a coating film provided at least at one end of a resonator, the coating film including a first layer formed on a resonator end surface and a second layer formed on the first layer, the first layer and second layer are formed with design values configured such that the sum of an optical thickness d1 of the first layer and an optical thickness d2 of the second layer is 0.45 to 0.55 times as large as a wavelength of laser light and the optical film thickness ratio d1/d2 of the first layer to the second layer satisfies 0.54≤d1/d2≤0.95 or 1.05≤d1/d2≤1.86. COPYRIGHT: (C)2011,JPO&INPIT
|
