title: Second-harmonic-generation microsystem light source at 488 nm for Raman spectroscopy.
abstract: A microsystem excitation light source emitting at 488 nm is presented. A direct single-pass nonlinear frequency conversion using a diode laser emission at 976 nm and a periodically poled lithium niobate waveguide crystal for efficient second-harmonic generation is demonstrated. This was realized on a micro-optical bench with a combined thermal management and a footprint of (25 mm x 5 mm). At 217 mW fundamental power a generated power of 56 mW at 488 nm with a conversion efficiency of 26% was achieved. With a power stability below 1%, this wavelength stabilized compact device is well suited for Raman spectroscopy.
authors.affiliation: Ferdinand-Braun-Institut fur Hochstfrequenztechnik, Berlin, Germany. Martin.Maiwald@FBH-Berlin.de
authors.forename: Martin
authors.initials: M
authors.lastname: Maiwald
authors.forename: Daniel
authors.initials: D
authors.lastname: Jedrzejczyk
authors.forename: Alexander
authors.initials: A
authors.lastname: Sahm
authors.forename: Katrin
authors.initials: K
authors.lastname: Paschke
authors.forename: Reiner
authors.initials: R
authors.lastname: Güther
authors.forename: Bernd
authors.initials: B
authors.lastname: Sumpf
authors.forename: Götz
authors.initials: G
authors.lastname: Erbert
authors.forename: Günther
authors.initials: G
authors.lastname: Tränkle