Check patentability & draft patents in minutes with Patsnap Eureka AI!

Vertical external cavity surface emitting laser (vecsel)

A technology for emitting lasers and lasers, used in lasers, laser parts, semiconductor lasers, etc., and can solve problems such as difficult VECSEL dimensions

Inactive Publication Date: 2007-07-25
SAMSUNG ELECTRONICS CO LTD
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes it difficult to reduce the size of VECSEL to less than several to tens of millimeters (mm)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vertical external cavity surface emitting laser (vecsel)
  • Vertical external cavity surface emitting laser (vecsel)
  • Vertical external cavity surface emitting laser (vecsel)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Now, a vertical external cavity surface emitting laser (VECSEL) according to a preferred embodiment of the present invention will be more fully described with reference to the accompanying drawings.

[0021] Fig. 2 is a schematic cross-sectional view of an end pump VECSEL according to an embodiment of the present invention. Referring to FIG. 2 , the end-pumped VECSEL includes a heat sink 61 , a laser chip 50 , a double frequency generator (SHG) crystal 63 and an out-of-plane cavity 67 . The heat sink 61 transmits an externally emitted pump beam of a predetermined wavelength (for example, 808 nm) while dissipating heat generated by the laser chip 50 . In order to have these functions, the radiator 61 can be made of materials with excellent heat dissipation performance and light transmission performance to the pump beam, such as diamond, silicon carbide (SiC), sapphire, AlN, GaN or Al 2 o 3 .

[0022] The laser chip 50 includes a distributed Bragg reflector (DBR) 51 an...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a vertical external cavity surface emitting laser (VECSEL). The VECSEL includes: a heat spreader dissipating generated heat; a laser chip that is disposed on the heat spreader and is excited by a pump beam of a predetermined wavelength to emit a beam of a first wavelength; a Second Harmonic Generation (SHG) crystal that is disposed on the laser chip or the heat spreader and converts the laser beam of the first wavelength emitted from the laser chip into a beam having a second wavelength that is one-half the first wavelength; and a planar external cavity mirror that is directly formed on the SHG crystal and has a predetermined transmittance with respect to the beam of the second wavelength.

Description

technical field [0001] The present invention relates to end-pumped vertical external cavity surface emitting lasers (VECSELs), and in particular, VECSELs having an improved optical structure in which the external cavity is formed with a modified mirror. Background technique [0002] VECSEL increases the gain range by adopting an external mirror instead of an upper mirror for a vertical cavity surface emitting laser (VCSEL), and obtains high output power from several watts to tens of watts (W) or more. [0003] Figure 1 illustrates the optical arrangement of a conventional pre-pumped VECSEL. With reference to Fig. 1, traditional VECSEL comprises: pumping unit, provides pump beam; Laser chip 11, it is excited by pump beam and emits laser beam; First mirror 17 and second mirror 19, they are arranged on laser chip 11 outside , and form an external cavity. [0004] The pumping unit includes a pumping light source 1 installed on the first heat sink 3 and a collimating lens 5 tha...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/183H01S5/024H01S5/04
CPCH01S3/08072H01S5/024H01S3/109H01S5/041H01S5/0213H01S5/18305H01S5/141H01S5/18383
Inventor 李俊昊金泽李商文
Owner SAMSUNG ELECTRONICS CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com