Abstract:
In an example, an apparatus to tandem pump a fiber laser or fiber amplifier may include a combiner; a power amplifier or a power oscillator, or a combination thereof, coupled to an output of the combiner; a seed laser to output light to the power amplifier or the power oscillator, or the combination thereof, via the combiner; and a tandem pump to generate light of a pump source signal, wherein the light of the pump source signal is output to the combiner to cladding pump the power amplifier or the power oscillator, or the combination thereof. Other embodiments may be disclosed and/or claimed.
Abstract:
According to another aspect of the present disclosed technology, a diode laser assembly, includes an optical fiber having a cladding and a large mode area (LMA) core, wherein the LMA core comprises a fiber Bragg grating disposed within the LMA core, a plurality of diode lasers configured to emit light, optics configured to receive the light and to couple the light into the LMA core, and one or more features in the optical fiber to couple higher order modes of the light leaving substantially single mode light to propagate in the LMA core wherein a portion of the single mode light propagating in the LMA core is reflected by the fiber Bragg grating and is coupled back through the optics into the plurality of diode lasers to lock the wavelength of light emitted from each diode laser of the plurality.
Abstract:
고효율 레이저 점화장치에 대해 개시한다. 본 발명의 고효율 레이저 점화장치는, 멀티칩 싱글 에미터 패키징 광섬유 출력형 레이저 다이오드를 채용한 펌핑광원; 이터븀이 첨가된 레이저 매질; 및 수동큐스위치 매질로서 포화흡수체를 기본적으로 구비하여 수동큐스위치 레이저 출력으로서 100피코초∼999피코초 펄스를 얻을 수 있는 것을 특징으로 한다. 본 발명에 따르면, 전기적인 스파크를 이용한 점화장치를 레이저 점화장치로 대체함에 있어서 약점으로 작용했던 고비용/저효율/저신뢰성/불균일성 문제를 해결할 수 있다.
Abstract:
A multimode fiber Raman laser includes a pump source having an emission area and a first etendue and a multimode Raman resonator fiber coupled to the pump source. The multimode Raman resonator fiber has a second etendue greater than or equal to the first etendue..
Abstract:
Die Erfindung betrifft eine Vorrichtung zum Einkoppeln vom Pumplicht in eine Faser von der Seite. Die Vorrichtung weist die in einer Längsrichtung verlaufende und ein zu pumpendes, optisch aktives Medium aufweisende Faser (2) mit einer etwa in der Längsrichtung verlaufenden Seitenwand (10) und mindestens ein zumindest abschnittsweise parallel zu der Faser entlang der Seitenwand (10) verlaufendes Lichteinkopplungsmittel auf. Das Lichteinkopplungsmittel ist ein Lichtwellenleiter (1), der derart optisch an die Faser (2) gekoppelt ist, dass in dem Lichtwellenleiter propagierendes Pumplicht insbesondere durch Übersprechen von Moden oder durch den Überlapp evaneszenter Felder über die Seitenwand in die Faser einkoppelbar ist. Ferner betrifft die Erfindung ein Verfahren zum Herstellen einer solchen Vorrichtung. Die Effizienz des Pumplichteintrags kann dadurch verbessert werden, dass eine Vielzahl von Windungen (5) der Faser (2) sich abwechselnd mit Wellenleitern (1) auf einem Substrat (7) befinden. Das in den Wellenleitern (1) geführte Pumplicht (8) tritt dann über die Seitenflächen (12) der Wellenleiter (1) und die Seitenflächen (10) der Fasern (2) ein wobei das Pumplicht z.B. über ein Prisma (9) in alle Wellenleiter (1) gleichzeitig eingekoppelt werden kann.
Abstract:
The present invention describes a self mode locking laser and a method for self mode locking a laser. The laser (1) comprises a resonator terminated by first (3) and second (4) mirrors and folded by a third mirror (5). The third mirror comprises a single distributed Bragg reflector (17) upon which is mounted a multilayer semiconductor gain medium (18) and which includes at least one quantum well layer and an optical Kerr lensing layer (22). Self mode locking may be achieved by configuring the laser resonator such that the lensing effect of the Kerr lensing layer acts to reduce an astigmatism deliberately introduced to the cavity mode. The self mode locking of the laser may be further enhanced by selecting the length of the resonator such that a round trip time of a cavity mode is matched with an upper- state lifetime of one or more semiconductor carriers located within the gain medium.
Abstract:
The present invention describes a self mode locking laser and a method for self mode locking a laser. The laser (1) comprises a resonator terminated by first (3) and second (4) mirrors and folded by a third mirror (5). The third mirror comprises a single distributed Bragg reflector (17) upon which is mounted a multilayer semiconductor gain medium (18) and which includes at least one quantum well layer and an optical Kerr lensing layer (22). Self mode locking may be achieved by configuring the laser resonator such that the lensing effect of the Kerr lensing layer acts to reduce an astigmatism deliberately introduced to the cavity mode. The self mode locking of the laser may be further enhanced by selecting the length of the resonator such that a round trip time of a cavity mode is matched with an upper- state lifetime of one or more semiconductor carriers located within the gain medium.