Light emitting device

A light emitting device comprising:

• an elongated lamp defining a central axis and including a first hollow tube concentric with said central axis, containing a gas therein, and producing light responsive to electrical input;
• an elongated, light transmissive optical element transparent to the light of said lamp and having at least a portion disposed within said lamp and at least one end extending outside said lamp from an end of said lamp, and said central axis extending through said optical element over the entire length of said optical element, said optical element transmitting the light from said lamp to said one end;
• and
• a transparent second hollow tube sealed to, concentric with and extending through said first tube for supporting said optical element therewithin, said sealed first and second tubes together forming an envelope containing said gas.

A light emitting device comprising:

• an elongated lamp defining a central axis and including a first hollow tube concentric with said central axis, containing a gas, and producing excitation light responsive to electrical input;
• an elongated, light transmissive, laser generating optical element having at least a portion disposed within said lamp and at least one end extending outside said lamp, from an end of said lamp, said central axis extending through said optical element over the entire length of said optical element, and said optical element emitting a laser beam responsive to said excitation light and transmitting the laser beam to said one end;
• and
• a transparent second hollow tube sealed to, concentric with and extending through said first tube for supporting said optical element therewithin, said sealed first and second tubes together forming an envelope containing said gas.